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Muhammad F, Hameed S, Haynes G, Mohammadi E, Khan AF, Shakir H, Smith ZA. Degenerative cervical myelopathy: establishing severity thresholds for neuromotor dysfunction in the aging spine using the NIH Toolbox Assessment Scale. GeroScience 2024; 46:2197-2206. [PMID: 37880488 PMCID: PMC10828326 DOI: 10.1007/s11357-023-00983-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 10/12/2023] [Indexed: 10/27/2023] Open
Abstract
Degenerative cervical myelopathy (DCM) is a leading cause of age-related non-traumatic spinal cord disorders resulting from chronic degeneration of the cervical spine. While traditional clinical assessments rely on patient-reported measures, this study used the NIH Toolbox Motor Battery (NIHTBm) as an objective, quantitative measure to determine DCM severity. The objective is to define NIHTBm cutoff values that can accurately classify the severity of DCM neuromotor dysfunction. A case-controlled pilot study of patients with DCM and age-matched controls. The focus was an in-depth quantitative motor assessment using the NIHTBm to understand the severity of neuromotor deficits due to degenerative spine disease. Motor assessments, dexterity, grip strength, balance, and gait speed were measured in 45 DCM patients and 37 age-matched healthy subjects (HC). Receiver operating curve (ROC) analysis determined cutoff values for mild and moderate-to-severe myelopathy which were validated by comparing motor assessment scores with disability scores. The ROC curves identified thresholds for mild dexterity impairment (T-score range 38.4 - 33.5, AUC 0.77), moderate-to-severe dexterity impairment (< 33.5, AUC 0.70), mild grip strength impairment (47.4 - 32.0, AUC 0.80), moderate-to-severe grip strength impairment (< 32.0, AUC 0.75), mild balance impairment (36.4 - 33.0, AUC 0.61), and moderate-to-severe balance impairment (< 33.0, AUC 0.78). Mild gait speed impairment was defined as 0.78-0.6 m/sec (AUC 0.65), while moderate-to-severe gait speed impairment was < 0.6 m/sec (AUC 0.65). The NIHTB motor score cutoff points correlated negatively with the DCM neck disability index (NDI) and showed balance and dexterity measures as independent indicators of DCM dysfunction. The use of NIHTB allows for precise delineation of DCM severity by establishing cutoff values corresponding to mild and moderate-to-severe myelopathy. The use of NIHTB in DCM allows enhanced clinical precision, enabling clinicians to better pinpoint specific motor deficits in DCM and other neurological disorders with motor deficits, including stroke and traumatic brain injury (TBI). Furthermore, the utility of objective assessment, NIHTB, allows us to gain a better understanding of the heterogeneity of DCM, which will enhance treatment strategies. This study serves as a foundation for future research to facilitate the discovery of innovative treatment strategies for DCM and other neurological conditions.
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Affiliation(s)
- Fauziyya Muhammad
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
| | - Sanaa Hameed
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Grace Haynes
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, OK, USA
| | - Esmaeil Mohammadi
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Ali F Khan
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Hakeem Shakir
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Zachary A Smith
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
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Karr JE, Ingram EO, Pinheiro CN, Ali S, Iverson GL. Test-Retest Reliability and Reliable Change on the NIH Toolbox Cognition Battery. Arch Clin Neuropsychol 2024:acae011. [PMID: 38402512 DOI: 10.1093/arclin/acae011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 12/22/2023] [Accepted: 01/25/2024] [Indexed: 02/26/2024] Open
Abstract
OBJECTIVE Researchers and practitioners can detect cognitive improvement or decline within a single examinee by applying a reliable change methodology. This study examined reliable change through test-retest data from the English-language National Institutes of Health Toolbox Cognition Battery (NIHTB-CB) normative sample. METHOD Participants included adults (n = 138; age: M ± SD = 54.8 ± 20.0, range: 18-85; 51.4% men; 68.1% White) who completed test-retest assessments about a week apart on five fluid cognition tests, providing raw scores, age-adjusted standard scores (SS), and demographic-adjusted T-scores (T). RESULTS The Fluid Cognition Composite (SS: ICC = 0.87; T-score: ICC = 0.84) and the five fluid cognition tests had good test-retest reliability (SS: ICC range = 0.66-0.85; T-score: ICC range = 0.64-0.86). The lower and upper bounds of 70%, 80%, and 90% confidence intervals (CIs) were calculated around change scores, which serve as cutoffs for determining reliable change. Using T-scores, 90% CI, and adjustment for practice effects, 32.3% declined on one or more tests, 9.7% declined on two or more tests, 36.6% improved on one or more tests, and 5.4% improved on two or more tests. CONCLUSIONS It was common for participants to show reliable change on at least one test score, but not two or more test scores. Per an 80% CI, test-retest difference scores beyond these cutoffs would indicate reliable change: Dimensional Change Card Sort (SS ≥ 14/T ≥ 10), Flanker (SS ≥ 12/T ≥ 8), List Sorting (SS ≥ 14/T ≥ 10), Picture Sequence Memory (SS ≥ 19/T ≥ 13), Pattern Comparison (SS ≥ 11/T ≥ 8), and Fluid Cognition Composite (SS ≥ 10/T ≥ 7). The reliable change cutoffs could be applied in research or practice to detect within-person change in fluid cognition at the individual level.
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Affiliation(s)
- Justin E Karr
- Department of Psychology, College of Arts and Sciences, University of Kentucky, Lexington, KY, USA
| | - Eric O Ingram
- Department of Psychology, College of Arts and Sciences, University of Kentucky, Lexington, KY, USA
| | - Cristina N Pinheiro
- Department of Psychology, College of Arts and Sciences, University of Kentucky, Lexington, KY, USA
| | - Sheliza Ali
- Department of Neurology, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - Grant L Iverson
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, USA
- Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Charlestown, MA, USA
- Department of Physical Medicine and Rehabilitation, Schoen Adams Research Institute at Spaulding Rehabilitation, Charlestown, MA, USA
- Home Base, A Red Sox Foundation and Massachusetts General Hospital Program, Charlestown, MA, USA
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Karr JE, Pinheiro CN, Harp JP. Performance Validity Testing on the NIH Toolbox Cognition Battery: Base Rates of Failed Embedded Validity Indicators in the Adult Normative Sample. Arch Clin Neuropsychol 2024; 39:204-213. [PMID: 37718664 PMCID: PMC10879920 DOI: 10.1093/arclin/acad071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2023] [Indexed: 09/19/2023] Open
Abstract
OBJECTIVE The goal of this study was to determine the base rates of failing proposed embedded validity indicators (EVIs) for the National Institutes of Health Toolbox Cognition Battery (NIHTB-CB) in the normative sample. METHOD Participants included adults in the NIHTB-CB normative sample with data to calculate age-adjusted standard scores (n = 855; ages: M(SD) = 46.9(17.3), range: 18-85; 65.0% women; education: M(SD) = 14.1(2.5) years) or demographically adjusted T-scores (n = 803; ages: M(SD) = 47.3(17.3), range: 18-85; 65.3% women; education: M(SD) = 14.2(2.5) years) for all tests. The NIHTB-CB includes two tests of crystallized cognition and five tests of fluid cognition. Individual norm-referenced test performances were categorized as falling above or below liberal and conservative cutoffs based on proposed univariate EVIs. The number of univariate EVI failures was summed to compute multivariable EVIs. EVI failure rates above 10% were considered high false-positive rates, indicating specificity < .90. Using chi-square analyses, the frequencies of EVI failures were compared based on gender, race/ethnicity, education, and crystallized composite. RESULTS The multivariable EVIs had predominantly low false-positive rates in the normative sample. EVI failure rates were most common among participants with low crystallized composites. Using age-adjusted standard scores, EVI failure rates varied by education, race/ethnicity, and estimated premorbid intelligence. These differences were mostly eliminated when using demographically adjusted T-scores. CONCLUSIONS Multivariable EVIs requiring ≥ 4 failures using liberal cutoffs or ≥ 3 failures using conservative cutoffs had acceptable false-positive rates (i.e., < 10%) using both age-adjusted standard scores and demographically adjusted T-scores. These multivariable EVIs could be applied to large data sets with NIHTB-CB data to screen for potentially invalid test performances.
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Affiliation(s)
- Justin E Karr
- Department of Psychology, College of Arts and Sciences, University of Kentucky, Lexington, KY, USA
| | - Cristina N Pinheiro
- Department of Psychology, College of Arts and Sciences, University of Kentucky, Lexington, KY, USA
| | - Jordan P Harp
- Department of Neurology, College of Medicine, University of Kentucky, Lexington, KY, USA
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Quigley KG, Fenner M, Pavilionis P, Constantino NL, Moran RN, Murray NG. Minimal Detectable Change for the ImPACT Subtests at Baseline. Arch Clin Neuropsychol 2024:acae002. [PMID: 38273670 DOI: 10.1093/arclin/acae002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 12/18/2023] [Accepted: 12/28/2023] [Indexed: 01/27/2024] Open
Abstract
OBJECTIVE To establish the minimal detectable change (MDC) of the subtests that comprise the composite scores from remotely administered Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) baselines. METHOD Remote ImPACT baseline data from 172 (male = 45, female = 127) National Collegiate Athletic Association Division I student-athletes from the 2020 and 2021 athletic preseasons were used to calculate the MDC at the 95%, 90%, and 80% confidence intervals (CIs) for all subtest scores used to generate the four core composite scores and the impulse control composite. RESULTS The MDCs for the verbal memory subtests at the 95% CI were 10.31 for word memory percent correct, 4.68 for symbol match total correct hidden, and 18.25 for three letters percentage correct. Visual memory subtest MDCs were 19.03 for design memory total percent correct and 4.90 for XO total correct memory. Visual motor speed subtest MDCs were 18.89 for XO total correct interference and 5.40 for three letters average counted correctly. Reaction time (RT) MDCs were 0.12 for XO average correct, 0.95 for symbol match average correct RT, and 0.28 for color match average correct. Impulse control MDCs were 5.97 for XO total incorrect and 1.15 for color match total commissions. One-way repeated measures MANOVA, repeated measures ANOVAs, and Wilcoxon signed-ranks test all suggested no significant difference between any subtests across two remote ImPACT baselines. CONCLUSIONS The ImPACT subtest scores did not significantly change between athletic seasons. Our study suggests the subtests be evaluated in conjunction with the composite scores to provide additional metrics for clinical interpretation.
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Affiliation(s)
- Kristen G Quigley
- Department of Kinesiology, School of Public Health, University of Nevada, Reno, NV, USA
| | - Madison Fenner
- Department of Kinesiology, School of Public Health, University of Nevada, Reno, NV, USA
| | - Philip Pavilionis
- Department of Kinesiology, School of Public Health, University of Nevada, Reno, NV, USA
| | - Nora L Constantino
- Department of Kinesiology, School of Public Health, University of Nevada, Reno, NV, USA
| | - Ryan N Moran
- Athletic Training Research Laboratory, Department of Health Science, The University of Alabama, Tuscaloosa, AL, USA
| | - Nicholas G Murray
- Department of Kinesiology, School of Public Health, University of Nevada, Reno, NV, USA
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Brown AD, Liese AD, Shapiro ALB, Frongillo EA, Wilkening G, Fridriksson J, Merchant AT, Henkin L, Jensen ET, Reboussin BA, Shah AS, Marcovina S, Dolan LM, Dabelea D, Pihoker C, Mendoza JA. Household Food Insecurity and Cognition in Youth and Young Adults with Youth-Onset Diabetes. Pediatr Diabetes 2023; 2023:6382663. [PMID: 38765732 PMCID: PMC11100256 DOI: 10.1155/2023/6382663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/22/2024] Open
Abstract
Objective We evaluated the association of household food insecurity (FI) with cognition in youth and young adults with type 1 diabetes (T1D) or type 2 diabetes (T2D). Design In this cross-sectional study, age-adjusted scores for composite Fluid Cognition, and sub-domain scores for Receptive Language and Inhibitory Control and Attention, were modeled stratified by diabetes-type using linear regression, with FI in the past year as the predictor, controlling for covariates. Tests for processing speed, inhibitory control/attention, working memory, episodic memory, and cognitive flexibility were administered to measure composite Fluid Cognition score. The NIHT-CB Picture Vocabulary Test was used to assess Crystallized Cognition score and rapid identification of congruent versus noncongruent items were used to assess Inhibitory Control and Attention score. Setting The SEARCH for Diabetes in Youth study, representative of 5 U.S. states. Participants Included 1574 youth and young adults with T1D or T2D, mean age of 21 years, mean diabetes duration of 11 years, 51% non-Hispanic white, and 47% had higher HbA1c levels (>9% HbA1c). Results Approximately 18% of the 1,240 participants with T1D and 31% of the 334 with T2D experienced FI. The food-insecure group with T1D had a lower composite Fluid Cognition score (β= -2.5, 95% confidence interval (CI)= -4.8, -0.1) and a lower Crystallized Cognition score (β= -3.4, CI= -5.6, -1.3) than food-secure peers. Findings were attenuated to non-significance after adjustment for demographics. Among T2D participants, no associations were observed. In participants with T1D effect modification by glycemic levels were found in the association between FI and composite Fluid Cognition score but adjustment for socioeconomic characteristics attenuated the interaction (p=0.0531). Conclusions Food-insecure youth and young adults with T1D or T2D did not have different cognition compared to those who were food-secure after adjustment for confounders. Longitudinal research is needed to further understand relations amongst these factors.
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Affiliation(s)
- Andrea D. Brown
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, 915 Greene Street, Columbia, SC, USA 29208
| | - Angela D. Liese
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, 915 Greene Street, Columbia, SC, USA 29208
| | - Allison L. B. Shapiro
- Department of Pediatrics, School of Medicine, University of Colorado Anschutz Medical Campus, 13123 E 16th Ave, Aurora, CO, USA 80045
| | - Edward A. Frongillo
- Department of Health Promotion, Education, and Behavior, University of South Carolina, 915 Greene Street Columbia, SC, USA 29208
| | - Greta Wilkening
- Department of Pediatrics, School of Medicine, University of Colorado Anschutz Medical Campus, 13123 E 16th Ave, Aurora, CO, USA 80045
| | - Julius Fridriksson
- Department of Communication Sciences & Disorders, University of South Carolina, 1705 College Street Columbia, SC, USA 29208
| | - Anwar T. Merchant
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, 915 Greene Street, Columbia, SC, USA 29208
| | - Leora Henkin
- Department of Biostatistics and Data Science, Wake Forest School of Medicine, 475 Vine Street, Winston-Salem, NC, USA 27101
| | - Elizabeth T. Jensen
- Department of Epidemiology and Prevention, Wake Forest School of Medicine, 475 Vine Street, Winston-Salem, NC USA 27101
| | - Beth A. Reboussin
- Department of Biostatistics and Data Science, Wake Forest School of Medicine, 475 Vine Street, Winston-Salem, NC, USA 27101
| | - Amy S. Shah
- Department of Pediatrics, Division of Endocrinology, Cincinnati Children’s Hospital Medical Center and The University of Cincinnati, 3333 Burnet Avenue, MLC 4002 Cincinnati, OH, USA 45229
| | - Santica Marcovina
- Medpace Reference Laboratories, 5365 Medpace Way, Cincinnati, OH, USA 45227
| | - Lawrence M. Dolan
- Department of Pediatrics, Division of Endocrinology, Cincinnati Children’s Hospital Medical Center and The University of Cincinnati, 3333 Burnet Avenue, MLC 4002 Cincinnati, OH, USA 45229
| | - Dana Dabelea
- Department of Pediatrics, School of Medicine, University of Colorado Anschutz Medical Campus, 13123 E 16th Ave, Aurora, CO, USA 80045
- Department of Epidemiology, Colorado School of Public Health, Anschutz Medical Campus, 13001 E. 17th Place, Mail Stop B119, Aurora, CO, USA 80045
| | - Catherine Pihoker
- Department of Pediatrics, University of Washington, Box 356320, Seattle WA, USA 98115-8160
| | - Jason A. Mendoza
- Department of Pediatrics, University of Washington, Box 356320, Seattle WA, USA 98115-8160
- Seattle Children’s Research Institute, PO Box 5371, Seattle, WA, USA 98145-5005
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Namaky N, Swearingen HR, Winter J, Bozzay M, Primack JM, Philip NS, Barredo J. Suicidal thoughts and behaviours among military veterans: protocol for a prospective, observational, neuroimaging study. BMJ Open 2023; 13:e070654. [PMID: 37586858 PMCID: PMC10432662 DOI: 10.1136/bmjopen-2022-070654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 08/01/2023] [Indexed: 08/18/2023] Open
Abstract
INTRODUCTION This study's overarching goal is to examine the relationship between brain circuits and suicidal thoughts and behaviours (STBs) in a transdiagnostic sample of US military veterans. Because STBs have been linked with maladaptive decision-making and disorders linked to impulsivity, this investigation focuses on valence and inhibitory control circuits. METHODS AND ANALYSIS In this prospective, observational study, we will collect functional MRI (fMRI), cognitive and clinical data from 136 veterans (target sample size) recruited from the Providence VA Health System (PVAHS): 68 with STBs and 68 matched controls. Behavioural data will be collected using standardised measures of STBs, psychiatric symptoms, cognition, functioning and medical history. Neuroimaging data will include structural, task and resting fMRI. We will conduct follow-up interviews and assessments at 6, 12 and 24 months post-enrolment. Primary analyses will compare data from veterans with and without STBs and will also evaluate whether activation and connectivity within circuits of valence and inhibition covary with historical and prospective patterns of suicidal ideation and behaviour. ETHICS AND DISSEMINATION The PVAHS Institutional Review Board approved this study (2018-051). Written informed consent will be obtained from all participants. Findings from this study will be published in peer-reviewed journals and presented at local, regional, national and international conferences.Nauder Namaky, Ph.D.* nauder_namaky@brown.edu.
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Affiliation(s)
- Nauder Namaky
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
- VA RR&D Center for Neurorestoration and Neurotechnology, Providence, Rhode Island, USA
| | - Hannah R Swearingen
- VA RR&D Center for Neurorestoration and Neurotechnology, Providence, Rhode Island, USA
| | - Jake Winter
- VA RR&D Center for Neurorestoration and Neurotechnology, Providence, Rhode Island, USA
| | - Melanie Bozzay
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
- Psychiatry and Behavioral Health, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Jennifer M Primack
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
- VA Long Term Services and Support Center of Innovation, Providence, Rhode Island, USA
| | - Noah S Philip
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
- VA RR&D Center for Neurorestoration and Neurotechnology, Providence, Rhode Island, USA
| | - Jennifer Barredo
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
- VA RR&D Center for Neurorestoration and Neurotechnology, Providence, Rhode Island, USA
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Wright B, Guilliod R, Thakur B, Kundig C, Morales J, Tessler J, Berry J, Zhang R, Bell KR, Pinto SM. Hyperbaric Oxygen Therapy versus placebo for post-concussion syndrome (HOT-POCS): A randomized, double-blinded controlled pilot study. Contemp Clin Trials Commun 2023; 34:101176. [PMID: 37416626 PMCID: PMC10320499 DOI: 10.1016/j.conctc.2023.101176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 06/14/2023] [Accepted: 06/19/2023] [Indexed: 07/08/2023] Open
Abstract
Post-Concussion Syndrome (PCS) refers to the persistence of physical, cognitive, and emotional symptoms following mild traumatic brain injury (mTBI)/concussion, occurring in roughly 15-30% of individuals. Hyperbaric oxygen therapy (HBOT) has been suggested as a potential treatment for PCS; however, the evidence to date is mixed due to inconsistencies in the treatment protocol and focus on veterans with combat-related injuries, which may not be generalizable to the general population. The goal of Hyperbaric Oxygen Therapy for Post-Concussion Syndrome (HOT-POCS) is to assess the efficacy and safety of HBOT for the treatment of PCS in the civilian population. This randomized, controlled pilot study will be using a standardized HBOT protocol (20 sessions of 100% O2 at 2.0 atm absolute [ATA]) compared with a true placebo gas system that mimics the oxygen composition at room air (20 sessions of 10.5% O2 and 89.5% nitrogen at 2.0 ATA) in a cohort of 100 adults with persistent post-concussive symptoms 3-12 months following injury. Change in symptoms on the Rivermead Post-concussion Questionnaire (RPQ) will be the primary outcome of interest. Secondary outcomes include the rate of adverse events, change in the quality of life, and change in cognitive function. Exploratory outcome measures will include changes in physical function and changes in cerebral brain perfusion and oxygen metabolism on MRI brain imaging. Overall, the HOT-POCS study will compare the efficacy of a standardized HBOT treatment protocol against a true placebo gas for the treatment of PCS within 12 months after injury.
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Affiliation(s)
- Brittany Wright
- Department of Physical Medicine and Rehabilitation, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Renie Guilliod
- Department of Physical Medicine and Rehabilitation, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Anesthesiology and Pain Management, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Bhaskar Thakur
- Department of Physical Medicine and Rehabilitation, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Family and Community Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Charles Kundig
- Department of Physical Medicine and Rehabilitation, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Jill Morales
- Department of Physical Medicine and Rehabilitation, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Joseph Tessler
- Department of Physical Medicine and Rehabilitation, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - James Berry
- Department of Anesthesiology and Pain Management, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Rong Zhang
- Departments of Neurology and Internal Medicine, University of Texas Southwestern Medical Center, Director of Cerebrovascular Laboratory, Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Dallas, Dallas, TX, USA
| | - Kathleen R. Bell
- Department of Physical Medicine and Rehabilitation, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Shanti M. Pinto
- Department of Physical Medicine and Rehabilitation, University of Texas Southwestern Medical Center, Dallas, TX, USA
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Iverson GL, Gaudet CE, Kissinger-Knox A, Karr JE. Normative Reference Values for Crystallized-Fluid Discrepancy Scores for the NIH Toolbox Cognition Battery. Arch Clin Neuropsychol 2023; 38:608-618. [PMID: 36225110 DOI: 10.1093/arclin/acac076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2022] [Indexed: 05/24/2023] Open
Abstract
INTRODUCTION The purpose of this study was to translate NIH Toolbox Cognition Battery (NIHTB-CB) Crystallized-Fluid discrepancy scores into research and clinical practice with adults by providing normative data for discrepancy scores for both age-adjusted standard scores (SSs) and demographically adjusted T-scores. METHOD We included adult participants from the NIHTB-CB standardization sample who denied having neurodevelopmental, medical, psychiatric, or neurological conditions (n = 730; M = 47.4 years old, SD = 17.6, range: 18-85; 64.4% women; 63.1% White). Descriptive statistics were calculated for the Fluid and Crystallized composite scores and Crystallized-Fluid discrepancy score, along with correlations between the composite scores and reliability estimates of the discrepancy score. Percentiles were calculated for the discrepancy score, with stratifications by the gender, education, and Crystallized composite for the age-adjusted SSs and demographically adjusted T-scores (T). RESULTS Crystallized-Fluid discrepancy scores ranged from -40 to 44 (M = -0.63, SD = 14.89, Mdn = -1, interquartile range [IQR]: -11 to 10) for age-adjusted SSs and from -29 to 27 (M = -0.39, SD = 10.49, Mdn = -1, IQR = -8 to 7) for demographically adjusted T-scores. Crystallized-Fluid discrepancy scores of SS = 15 and T = 11 were at the 16th percentile (1 SD below the mean) and discrepancy scores of SS = 21 and T = 15 were at the 7th percentile (1.5 SD below the mean). CONCLUSIONS Crystallized-Fluid discrepancy scores may be, with future research, a useful within-person interpretive approach for detecting a decline from pre-injury or pre-disease levels of cognitive functioning. These normative reference values assist clinicians and researchers in determining the frequency at which given Crystallized-Fluid discrepancy scores occurred among healthy adults in the normative sample.
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Affiliation(s)
- Grant L Iverson
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, USA
- Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital and Spaulding Rehabilitation Institute, Charlestown, MA, USA
- MassGeneral Hospital for Children Sports Concussion Program, Boston, MA, USA
- Home Base, A Red Sox Foundation and Massachusetts General Hospital Program, Charlestown, MA, USA
| | - Charles E Gaudet
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, USA
- Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital and Spaulding Rehabilitation Institute, Charlestown, MA, USA
- MassGeneral Hospital for Children Sports Concussion Program, Boston, MA, USA
- Home Base, A Red Sox Foundation and Massachusetts General Hospital Program, Charlestown, MA, USA
| | - Alicia Kissinger-Knox
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, USA
- Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital and Spaulding Rehabilitation Institute, Charlestown, MA, USA
- MassGeneral Hospital for Children Sports Concussion Program, Boston, MA, USA
- Home Base, A Red Sox Foundation and Massachusetts General Hospital Program, Charlestown, MA, USA
| | - Justin E Karr
- Department of Psychology, University of Kentucky, Lexington, KY, USA
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Lau SCL, Connor LT, Baum CM. Subjective and objective assessments are associated for physical function but not cognitive function in community-dwelling stroke survivors. Disabil Rehabil 2022; 44:8349-8356. [PMID: 34904503 DOI: 10.1080/09638288.2021.2012845] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
PURPOSE To investigate the relation between subjectively and objectively assessed cognitive and physical functioning among community-dwelling stroke survivors, and to examine the association of stroke severity with subjectively and objectively assessed cognitive and physical impairments. MATERIALS AND METHODS Secondary data analysis was conducted with 127 community-dwelling stroke survivors. For cognitive functioning, objective measures included the NIH Toolbox Cognition Battery and the Executive Function Performance Test; subjective measures included the Quality of Life in Neurological Disorders Applied Cognition. Objective and subjective physical functioning was measured by the NIH Toolbox 2-Minute Walk Test and the Patient-Reported Outcomes Measurement Information System Physical Function, respectively. RESULTS A positive correlation was observed between subjective and objective physical functioning, whereas the correlation between subjective and objective cognitive functioning was nonsignificant. Stroke severity was associated with objective cognitive impairment and objective and subjective physical impairment, but not subjective cognitive impairment. CONCLUSIONS The lack of association between objective and subjective cognitive functioning challenges the conventional assumption that perceived functioning reflects actual performance. We recommend using both objective and subjective measures to accurately identify cognitive and physical impairment following stroke.Implications for RehabilitationSubjective cognitive functioning is not associated with objective cognitive functioning, suggesting that solely relying on stroke patients' reports is inadequate and may inaccurately estimate patients' actual deficits.Both objective and subjective measures should be used to accurately identify cognitive and physical impairment following stroke.Practitioners should be cognizant of stroke patients' behavioral signs associated with underlying cognitive problems that warrant further evaluation.
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Affiliation(s)
- Stephen C L Lau
- Program in Occupational Therapy, Washington University School of Medicine, St. Louis, MO, USA
| | - Lisa Tabor Connor
- Program in Occupational Therapy, Washington University School of Medicine, St. Louis, MO, USA.,Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA
| | - Carolyn M Baum
- Program in Occupational Therapy, Washington University School of Medicine, St. Louis, MO, USA.,Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA.,Brown School of Social Work, Washington University in St. Louis, St. Louis, MO, USA
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10
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Welbel RZ, Rand CM, Zhou A, Fadl-Alla A, Chen ML, Weese-Mayer DE, Zelko FA. Neurocognitive monitoring in congenital central hypoventilation syndrome with the NIH Toolbox®. Pediatr Pulmonol 2022; 57:2040-2047. [PMID: 35574731 PMCID: PMC9541049 DOI: 10.1002/ppul.25973] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 05/10/2022] [Accepted: 05/13/2022] [Indexed: 11/09/2022]
Abstract
Congenital central hypoventilation syndrome (CCHS) is a rare neurocristopathy, caused by mutations in the paired-like homeobox gene PHOX2B, which alters control of breathing and autonomic nervous system regulation, necessitating artificial ventilation as life-support. A broad range of neurocognitive performance has been reported in CCHS, including an array of cognitive deficits. We administered the NIH Toolbox® Cognition Battery (NTCB), a novel technology comprised of seven tasks presented via an interactive computer tablet application, to a CCHS cohort and studied its convergent and divergent validity relative to traditional clinical neurocognitive measures. The NTCB was administered to 51 CCHS participants, including a subcohort of 24 who also received traditional clinical neurocognitive testing (Wechsler Intelligence Scales). Age-corrected NTCB scores from the overall sample and subcohort were compared to population norms. Associations between NTCB indices and Wechsler Intelligence scores were studied to determine the convergent and divergent validity of the NTCB. NTCB test results indicated reduced Fluid Cognition, which measures new learning and speeded information processing (p < 0.001), but intact Crystallized Cognition, which measures past learning, in CCHS relative to population norms. Moderate to strong associations (r > 0.60) were found between age-corrected NTCB Fluid and Crystallized indices and comparable Wechsler indices, supporting the convergent and discriminant validity of the NTCB. Results reveal deficits of Fluid Cognition in individuals with CCHS and indicate that the NTCB is a valid and sensitive measure of cognitive outcomes in this population. Our findings suggest that the NTCB may play a useful role in tracking neurocognition in CCHS.
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Affiliation(s)
- Remi Z Welbel
- Department of Pediatrics, Division of Autonomic Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago and Stanley Manne Children's Research Institute, Chicago, Illinois, USA
| | - Casey M Rand
- Department of Pediatrics, Division of Autonomic Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago and Stanley Manne Children's Research Institute, Chicago, Illinois, USA
| | - Amy Zhou
- Department of Pediatrics, Division of Autonomic Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago and Stanley Manne Children's Research Institute, Chicago, Illinois, USA
| | - Allaa Fadl-Alla
- Department of Pediatrics, Division of Autonomic Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago and Stanley Manne Children's Research Institute, Chicago, Illinois, USA
| | - Maida Lynn Chen
- Department of Pediatrics, Division of Pulmonary and Sleep Medicine, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington, USA
| | - Debra E Weese-Mayer
- Department of Pediatrics, Division of Autonomic Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago and Stanley Manne Children's Research Institute, Chicago, Illinois, USA.,Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Frank A Zelko
- Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.,Pritzker Department of Psychiatry and Behavioral Health, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
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11
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Ott LR, Schantell M, Willett MP, Johnson HJ, Eastman JA, Okelberry HJ, Wilson TW, Taylor BK, May PE. Construct validity of the NIH toolbox cognitive domains: A comparison with conventional neuropsychological assessments. Neuropsychology 2022; 36:468-481. [PMID: 35482626 PMCID: PMC10468104 DOI: 10.1037/neu0000813] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVE Previous studies have assessed the construct validity of individual subtests in the National Institutes of Health (NIH) Toolbox Cognition Battery (NIHTB-CB), though none have examined the construct validity of the cognitive domains. Importantly, the original NIHTB-CB validation studies were administered on a desktop computer, though the NIHTB-CB is now solely administered via an iPad. We examined the construct validity of each cognitive domain assessed in the NIHTB-CB, including a motor dexterity domain using the iPad application compared to a neuropsychological battery in a sample of healthy adults. METHOD Eighty-three adults aged 20-66 years (M = 44.35 ± 13.41 years) completed the NIHTB-CB and a comprehensive neuropsychological assessment. Domain scores for each of six cognitive domains (attention and executive function, episodic memory, working memory, processing speed, language, and motor dexterity) and the fluid composite were computed for both batteries. We then assessed the construct validity using Pearson correlations and intraclass correlation coefficients (ICCs) for both demographically corrected and uncorrected domains. RESULTS We found the attention and executive function, episodic memory, and processing speed domains had poor-to-adequate construct validity (ICCConsistency = -0.029 to 0.517), the working memory and motor dexterity domains and the fluid composite had poor-to-good construct validity (ICCConsistency = 0.215-0.801), and the language domain had adequate-to-good construct validity (ICCConsistency = 0.408-0.829). CONCLUSION The NIHTB-CB cognitive domains have poor-to-good construct validity, thus researchers should be aware that some tests representing cognitive constructs may not fully reflect the cognitive domain of interest. Future investigation of the construct validity and reliability of the NIHTB-CB administered using the iPad is recommended. (PsycInfo Database Record (c) 2022 APA, all rights reserved).
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Affiliation(s)
- Lauren R. Ott
- Institute for Human Neuroscience, Boys Town National Research Hospital, Boys Town, NE USA
| | - Mikki Schantell
- Institute for Human Neuroscience, Boys Town National Research Hospital, Boys Town, NE USA
- College of Medicine, University of Nebraska Medical Center (UNMC), Omaha, NE USA
| | - Madelyn P. Willett
- Institute for Human Neuroscience, Boys Town National Research Hospital, Boys Town, NE USA
| | - Hallie J. Johnson
- Institute for Human Neuroscience, Boys Town National Research Hospital, Boys Town, NE USA
| | - Jacob A. Eastman
- Institute for Human Neuroscience, Boys Town National Research Hospital, Boys Town, NE USA
| | - Hannah J. Okelberry
- Institute for Human Neuroscience, Boys Town National Research Hospital, Boys Town, NE USA
| | - Tony W. Wilson
- Institute for Human Neuroscience, Boys Town National Research Hospital, Boys Town, NE USA
- College of Medicine, University of Nebraska Medical Center (UNMC), Omaha, NE USA
| | - Brittany K. Taylor
- Institute for Human Neuroscience, Boys Town National Research Hospital, Boys Town, NE USA
| | - Pamela E. May
- College of Medicine, University of Nebraska Medical Center (UNMC), Omaha, NE USA
- Department of Neurological Sciences, UNMC, Omaha, NE USA
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12
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Thomas BP, Tarumi T, Wang C, Zhu DC, Tomoto T, Munro Cullum C, Dieppa M, Diaz-Arrastia R, Bell K, Madden C, Zhang R, Ding K. Hippocampal and rostral anterior cingulate blood flow is associated with affective symptoms in chronic traumatic brain injury. Brain Res 2021; 1771:147631. [PMID: 34464600 DOI: 10.1016/j.brainres.2021.147631] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 08/02/2021] [Accepted: 08/21/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The purpose of this study was to assess cerebral blood flow (CBF) and its association with self-reported symptoms in chronic traumatic brain injury (TBI). PARTICIPANTS Sixteen participants with mild to severe TBI and persistent self-reported neurological symptoms, 6 to 72 months post-injury were included. For comparison, 16 age- and gender-matched healthy normal control participants were also included. MAIN MEASURES Regional CBF and brain volume were assessed using pseudo-continuous Arterial Spin Labeling (PCASL) and T1-weighted data respectively. Cognitive function and self-reported symptoms were assessed in TBI participants using the national institutes of health (NIH) Toolbox Cognition Battery and Patient-Reported Outcome Measurement Information System respectively. Associations between CBF and cognitive function, symptoms were assessed. RESULTS Global CBF and regional brain volumes were similar between groups, but region of interest (ROI) analysis revealed lower CBF bilaterally in the thalamus, hippocampus, left caudate, and left amygdala in the TBI group. Voxel-wise analysis revealed that CBF in the hippocampus, parahippocampus, rostral anterior cingulate, inferior frontal gyrus, and other temporal regions were negatively associated with self-reported anger, anxiety, and depression symptoms. Furthermore, region of interest (ROI) analysis revealed that hippocampal and rostral anterior cingulate CBF were negatively associated with symptoms of fatigue, anxiety, depression, and sleep issues. CONCLUSION Regional CBF deficit was observed in the group with chronic TBI compared to the normal control (NC) group despite similar volume of cerebral structures. The observed negative correlation between regional CBF and affective symptoms suggests that CBF-targeted intervention may potentially improve affective symptoms and quality of life after TBI, which needs to be assessed in future studies.
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Affiliation(s)
- Binu P Thomas
- Advanced Imaging Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, TX 75390, USA; Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, TX 75390, USA; Department of Bioengineering, University of Texas at Arlington, 500 UTA Blvd., Arlington, TX 76010, USA.
| | - Takashi Tarumi
- Department of Neurology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, TX 75390, USA; Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas, 8200 Walnut Hill Ln, Dallas, TX 75231, USA.
| | - Ciwen Wang
- Department of Neurology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, TX 75390, USA
| | - David C Zhu
- Department of Radiology and Cognitive Imaging Research Center, Michigan State University, 86 Service Road, East Lansing, MI 48824, USA
| | - Tsubasa Tomoto
- Department of Neurology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, TX 75390, USA; Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas, 8200 Walnut Hill Ln, Dallas, TX 75231, USA
| | - C Munro Cullum
- Department of Neurology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, TX 75390, USA; Department of Radiology and Cognitive Imaging Research Center, Michigan State University, 86 Service Road, East Lansing, MI 48824, USA; Department of Psychiatry, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, TX 75390, USA; Department of Neurological Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, TX 75390, USA
| | - Marisara Dieppa
- Department of Neurology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, TX 75390, USA
| | - Ramon Diaz-Arrastia
- Department of Neurology, University of Pennsylvania Perelman School of Medicine, 51 North 39(th) St, Philadelphia, PA 19104, USA
| | - Kathleen Bell
- Department of Physical Medicine and Rehabilitation, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, TX 75390, USA
| | - Christopher Madden
- Department of Radiology and Cognitive Imaging Research Center, Michigan State University, 86 Service Road, East Lansing, MI 48824, USA
| | - Rong Zhang
- Department of Neurology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, TX 75390, USA; Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas, 8200 Walnut Hill Ln, Dallas, TX 75231, USA
| | - Kan Ding
- Department of Neurology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, TX 75390, USA
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13
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Maerlender A, Smith E, Brolinson PG, Urban J, Rowson S, Ajamil A, Campolettano ET, Gellner RA, Bellamkonda S, Kelley ME, Jones D, Powers A, Beckwith J, Crisco J, Stitzel J, Duma S, Greenwald RM. Psychometric properties of the standardized assessment of concussion in youth football: Validity, reliability, and demographic factors. APPLIED NEUROPSYCHOLOGY. CHILD 2021; 10:377-383. [PMID: 32142619 DOI: 10.1080/21622965.2020.1726746] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The objective of this study was to determine the psychometrics (reliability, validity) of the original Standardized Assessment of Concussion (SAC) in a youth sample (ages 11 to 13). Demographic factors of race, level of vocabulary knowledge, mother's level of education were also considered. Over 150 youth football athletes completed the SAC and a brief battery of NIH Toolbox cognitive tests as part of a larger study on biomechanical factors in youth sport concussion. This was a within-subjects design (pre-season, post-season assessments), and correlational analysis of convergent and discriminant validity. Between groups analysis based on demographic differences was also employed. The pre-season SAC scores were not different by age; however, SAC scores were statistically different by race: t(155) = 3.162, p = .002, d = .519. Maternal level of education and participant vocabulary scores were related to racial group membership. Convergent and discriminant validity were established compared to NIH Toolbox tests of memory and speed. Pre-post-season tests for 108 participants established marginally acceptable test-retest reliability (ICC = .692). These data support the use of the original SAC in youth football although clinicians must be aware of racial differences in scores.
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Affiliation(s)
- Arthur Maerlender
- Center for Brain, Biology and Behavior, University of Nebraska, Lincoln, Nebraska, USA
| | - Eric Smith
- Department of Statistics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
| | - P Gunnar Brolinson
- Family and Sports Medicine, Edward Via College of Osteopathic Medicine, Blacksburg, Virginia, USA
| | - Jillian Urban
- Center for Injury Biomechanics, Wake Forest University, Winston-Salem, North Carolina, USA
| | - Steven Rowson
- Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
| | | | - Eamon T Campolettano
- Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
| | - Ryan A Gellner
- Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
| | | | - Mireille E Kelley
- Center for Injury Biomechanics, Wake Forest University, Winston-Salem, North Carolina, USA
| | - Derek Jones
- Center for Injury Biomechanics, Wake Forest University, Winston-Salem, North Carolina, USA
| | - Alex Powers
- Neurosurgery, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
| | | | - Joseph Crisco
- Department of Orthopaedics, Brown University, Providence, Rhode Island, USA
| | - Joel Stitzel
- Biomedical Engineering, Wake Forest University, Winston-Salem, North Carolina, USA
| | - Stefan Duma
- Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
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14
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Chadwick L, Roth E, Minich NM, Taylor HG, Bigler ED, Cohen DM, Bacevice A, Mihalov LK, Bangert BA, Zumberge NA, Yeates KO. Cognitive Outcomes in Children with Mild Traumatic Brain Injury: An Examination Using the National Institutes of Health Toolbox Cognition Battery. J Neurotrauma 2021; 38:2590-2599. [PMID: 33906429 PMCID: PMC8403208 DOI: 10.1089/neu.2020.7513] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
This study is the first to examine cognitive outcomes after pediatric mild TBI using the National Institutes of Health Toolbox Cognition Battery (NIHTB-CB), a computerized cognitive test battery. The NIHTB-CB includes two complex measures of attention and executive function that allow differentiation of accuracy and response speed. We compared performance on the NIHTB-CB among children 8-16 years of age with mild TBI (n = 143) versus children with orthopedic injuries (OIs; n = 74) recruited in emergency departments and followed for 6 months post-injury. Mixed-model analyses showed that the mild TBI group showed significantly lower Fluid Cognition composite scores than the OI group at 10 days (group intercept, p = 0.018); the magnitude of group differences declined modestly over time (group × time interaction, p = 0.055). Effect sizes were d = 0.34 at 10 days post-injury, d = 0.27 at 3 months, and d = 0.10 at 6 months. No significant effects of group or time were found for the Crystallized Cognition composite. Analyses of Fluid Cognition subtests indicated that children with mild TBI displayed deficits for as long as 3 months on measures of attention and executive function (e.g., cognitive flexibility, inhibitory control), but not on measures of explicit memory, working memory, or processing speed. The poorer performance of the mild TBI group on measures of attention and executive function was attributable largely to slowed reaction time, not decreased accuracy. The findings suggest that children with mild TBI demonstrate persistent deficits in fluid cognition that are most apparent on tasks that combine demands for both speed and executive function.
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Affiliation(s)
- Leah Chadwick
- Department of Psychology and Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
| | - Elizabeth Roth
- Department of Pediatrics, Case Western Reserve University, Cleveland, Ohio, USA
| | - Nori M. Minich
- Department of Pediatrics, Case Western Reserve University, Cleveland, Ohio, USA
| | - H. Gerry Taylor
- Department of Pediatrics, The Ohio State University, Columbus, Ohio, USA
- Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Erin D. Bigler
- Departments of Psychology and Neuroscience, Brigham Young University, Provo, Utah, USA
| | - Daniel M. Cohen
- Department of Pediatrics, The Ohio State University, Columbus, Ohio, USA
- Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Ann Bacevice
- Department of Pediatrics, Case Western Reserve University, Cleveland, Ohio, USA
- Rainbow Babies and Children's Hospital, Cleveland, Ohio, USA
| | - Leslie K. Mihalov
- Department of Pediatrics, The Ohio State University, Columbus, Ohio, USA
- Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Barbara A. Bangert
- Departments of Radiology and Neurosurgery, University Hospitals Health System, Cleveland, Ohio, USA
| | | | - Keith Owen Yeates
- Department of Psychology and Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
- Departments of Pediatrics and Clinical Neurosciences and Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
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15
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Pedrotty M, Wong TS, Wilde EA, Bigler ED, Laatsch LK. Application of neuropsychology and imaging to brain injury and use of the integrative cognitive rehabilitation psychotherapy model. NeuroRehabilitation 2021; 49:307-327. [PMID: 34420990 DOI: 10.3233/nre-218028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND An early approach to cognitive rehabilitation therapy (CRT) was developed based on A. R. Luria's theory of brain function. Expanding upon this approach, the Integrative Cognitive Rehabilitation Psychotherapy model (ICRP) was advanced. OBJECTIVE To describe the ICRP approach to treatment of clients post brain injury and provide a comprehensive list of evaluation tools to determine the client's abilities and needs. Finally, to provide a link between CRT and functional imaging studies designed to improve rehabilitation efforts. METHODS History of cognitive rehabilitation and neuropsychological testing is reviewed and description of cognitive, academic, psychiatric, and substance abuse tools are provided. Cognitive and emotional treatment techniques are fully described. Additionally, a method of determining the client's stage of recovery and pertinent functional imaging studies is detailed. RESULTS Authors have been able to provide a set of tools and techniques to use in comprehensive treatment of clients with brain injury. CONCLUSIONS Inclusive treatment which is outlined in the ICRP model is optimal for the client's recovery and return to a full and satisfying life post brain injury. The model provides a framework for neuropsychologists to integrate issues that tend to co-occur in clients living with brain injury into a unified treatment plan.
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Affiliation(s)
- Mark Pedrotty
- Tingley Hospital Outpatient -UNM, Albuquerque, NM, USA
| | - Tiffanie S Wong
- Polytrauma Rehabilitation Center, Comprehensive Rehabilitation Center, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA.,Stem Cognitive and Psychological Rehabilitation, Inc., Palo Alto, CA, USA
| | - Elisabeth A Wilde
- Traumatic Brain Injury and Concussion Center, Department of Neurology, University of Utah, Salt Lake City, UT, USA.,George E. Wahlen Veterans' Affairs Medical Center, Salt Lake City, UT, USA
| | - Erin D Bigler
- Traumatic Brain Injury and Concussion Center, Department of Neurology, University of Utah, Salt Lake City, UT, USA.,Psychology Department and Neuroscience Center, Brigham Young University, Provo, UT, USA
| | - Linda K Laatsch
- Department of Neurology, University of Illinois, Chicago, IL, USA
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16
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Mohapatra B, Laures-Gore J. Moving Toward Accurate Assessment of Working Memory in Adults With Neurogenically Based Communication Disorders. AMERICAN JOURNAL OF SPEECH-LANGUAGE PATHOLOGY 2021; 30:1292-1300. [PMID: 33970679 DOI: 10.1044/2021_ajslp-20-00305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Purpose This article presents a viewpoint highlighting concerns regarding currently available assessments of working memory in adults with neurogenic communication disorders. Additionally, we provide recommendations for improving working memory assessment in this population. Method This viewpoint includes a critique of clinical and experimental working memory tests relevant to speech-language pathologists. We consider the terminology used to describe memory, as well as discuss language demands and test construction. Results Clinical and experimental testing of working memory in adults with neurogenic communication disorders is challenged due to theoretical, methodological, and practical limitations. The major limitations are characterized as linguistic and task demands, presentation and response modality effects, test administration, and scoring parameters. Taking these limitations into consideration, several modifications to working memory testing and their relevance to neurogenic populations are discussed. Conclusions The recommendations provided in this article can better guide clinicians and researchers to advocate for improved tests of working memory in adults with neurogenic communication disorders. Future research should continue to address these concerns and consider our recommendations.
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Affiliation(s)
- Bijoyaa Mohapatra
- Department of Communication Disorders, New Mexico State University, Las Cruces
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17
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Ma Y, Carlsson CM, Wahoske ML, Blazel HM, Chappell RJ, Johnson SC, Asthana S, Gleason CE. Latent Factor Structure and Measurement Invariance of the NIH Toolbox Cognition Battery in an Alzheimer's Disease Research Sample. J Int Neuropsychol Soc 2021; 27:412-425. [PMID: 33012297 PMCID: PMC8108547 DOI: 10.1017/s1355617720000922] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE This study investigated the latent factor structure of the NIH Toolbox Cognition Battery (NIHTB-CB) and its measurement invariance across clinical diagnosis and key demographic variables including sex, race/ethnicity, age, and education for a typical Alzheimer's disease (AD) research sample. METHOD The NIHTB-CB iPad English version, consisting of 7 tests, was administered to 411 participants aged 45-94 with clinical diagnosis of cognitively unimpaired, dementia, mild cognitive impairment (MCI), or impaired not MCI. The factor structure of the whole sample was first examined with exploratory factor analysis (EFA) and further refined using confirmatory factor analysis (CFA). Two groups were classified for each variable (diagnosis or demographic factors). The confirmed factor model was next tested for each group with CFA. If the factor structure was the same between the groups, measurement invariance was then tested using a hierarchical series of nested two-group CFA models. RESULTS A two-factor model capturing fluid cognition (executive function, processing speed, and memory) versus crystalized cognition (language) fit well for the whole sample and each group except for those with age < 65. This model generally had measurement invariance across sex, race/ethnicity, and education, and partial invariance across diagnosis. For individuals with age < 65, the language factor remained intact while the fluid cognition was separated into two factors: (1) executive function/processing speed and (2) memory. CONCLUSIONS The findings mostly supported the utility of the battery in AD research, yet revealed challenges in measuring memory for AD participants and longitudinal change in fluid cognition.
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Affiliation(s)
- Yue Ma
- Wisconsin Alzheimer’s Disease Research Center,
University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Cynthia M. Carlsson
- Wisconsin Alzheimer’s Disease Research Center,
University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Wisconsin Alzheimer’s Institute, University of
Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Geriatric Research Education and Clinical Center, William
S. Middleton Memorial Veterans Hospital, Madison, WI, USA
| | - Michelle L. Wahoske
- Wisconsin Alzheimer’s Disease Research Center,
University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Hanna M. Blazel
- Wisconsin Alzheimer’s Disease Research Center,
University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Richard J. Chappell
- Wisconsin Alzheimer’s Disease Research Center,
University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Department of Biostatistics and Medical Informatics,
University of Wisconsin, Madison, WI, USA
- Department of Statistics, University of Wisconsin, Madison,
WI, USA
| | - Sterling C. Johnson
- Wisconsin Alzheimer’s Disease Research Center,
University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Wisconsin Alzheimer’s Institute, University of
Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Geriatric Research Education and Clinical Center, William
S. Middleton Memorial Veterans Hospital, Madison, WI, USA
| | - Sanjay Asthana
- Wisconsin Alzheimer’s Disease Research Center,
University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Geriatric Research Education and Clinical Center, William
S. Middleton Memorial Veterans Hospital, Madison, WI, USA
| | - Carey E. Gleason
- Wisconsin Alzheimer’s Disease Research Center,
University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Wisconsin Alzheimer’s Institute, University of
Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Geriatric Research Education and Clinical Center, William
S. Middleton Memorial Veterans Hospital, Madison, WI, USA
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18
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Abstract
OBJECTIVES Head impact exposure (HIE) in youth football is a public health concern. The objective of this study was to determine if one season of HIE in youth football was related to cognitive changes. METHOD Over 200 participants (ages 9-13) wore instrumented helmets for practices and games to measure the amount of HIE sustained over one season. Pre- and post-season neuropsychological tests were completed. Test score changes were calculated adjusting for practice effects and regression to the mean and used as the dependent variables. Regression models were calculated with HIE variables predicting neuropsychological test score changes. RESULTS For the full sample, a small effect was found with season average rotational values predicting changes in list-learning such that HIE was related to negative score change: standardized beta (β) = -.147, t(205) = -2.12, and p = .035. When analyzed by age clusters (9-10, 11-13) and adding participant weight to models, the R2 values increased. Splitting groups by weight (median split), found heavier members of the 9-10 cohort with significantly greater change than lighter members. Additionaly, significantly more participants had clinically meaningful negative changes: X2 = 10.343, p = .001. CONCLUSION These findings suggest that in the 9-10 age cluster, the average seasonal level of HIE had inverse, negative relationships with cognitive change over one season that was not found in the older group. The mediation effects of age and weight have not been explored previously and appear to contribute to the effects of HIE on cognition in youth football players.
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19
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Jusko ML, Raiker JS, Campez M, Smith JN, Fosco WD, Horta L, Little K, Espinal K, Sanchez G, Mattfeld AT, Gnagy EM, Greiner AR, Coles EK, Pelham WE. Brief report: Evaluation of working memory deficits in children with ADHD using the NIH list sorting working memory task. Child Neuropsychol 2021; 27:613-620. [PMID: 33480319 DOI: 10.1080/09297049.2021.1876014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Variability in working memory (WM) task selection likely contributes to heterogeneity in effect size estimates of deficiencies in youth with attention-deficit/hyperactivity disorder (ADHD). This has resulted in the development of brief, easy to administer assessments such as the NIH List Sorting Working Memory (LSWM) task from the NIH Cognitive Toolbox in hopes of standardizing measurement of this construct. Unfortunately, substantial questions persist regarding the specific constructs being evaluated by this task (e.g., visuospatial [VS] or phonological [PH] WM) as well as the ability of this task to detect WM deficits in previously identified impaired groups (e.g., ADHD). The current study examines the extent to which the LSWM task is associated with VS and PHWM performance as well as symptoms of ADHD. Additionally, we examined the magnitude of differences between ADHD and Typically Developing (TD) youth on this task relative to empirically derived WM tasks utilized in the past. Forty-six children (25 ADHD, 21 TD) completed multiple WM tasks. The LSWM task was moderately associated with PHWM and demonstrated relatively weaker associations with VSWM. Symptoms of inattention and hyperactivity/impulsivity were unrelated to the LSWM task; whereas tasks assessing PH and VSWM were moderately associated with inattention and weakly associated with hyperactivity (VSWM only). No significant between-group differences in performance emerged on the LSWM task; however, significant large-magnitude group differences were observed on both the PH and VSWM tasks. These findings suggest that the LSWM task may lack the ability to detect WM difficulties in youth with ADHD.
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Affiliation(s)
- Morgan L Jusko
- Center for Children and Families, Florida International University, Miami, FL, USA
| | - Joseph S Raiker
- Center for Children and Families, Florida International University, Miami, FL, USA
| | - Mileini Campez
- Center for Children and Families, Florida International University, Miami, FL, USA
| | - Jessica N Smith
- Center for Children and Families, Florida International University, Miami, FL, USA
| | - Whitney D Fosco
- Department of Psychiatry and Behavioral Health, Penn State Hershey Medical Center, Hershey, PA, USA.,Department of Psychiatry and Behavioral Health, Penn State College of Medicine, Hershey, PA, USA
| | - Leonel Horta
- Center for Children and Families, Florida International University, Miami, FL, USA
| | - Kelcey Little
- Marcus Autism Center, Emory University, Atlanta, GA, USA
| | - Kisbel Espinal
- Center for Children and Families, Florida International University, Miami, FL, USA
| | - Gabriela Sanchez
- Center for Children and Families, Florida International University, Miami, FL, USA
| | - Aaron T Mattfeld
- Center for Children and Families, Florida International University, Miami, FL, USA
| | - Elizabeth M Gnagy
- Center for Children and Families, Florida International University, Miami, FL, USA
| | - Andrew R Greiner
- Center for Children and Families, Florida International University, Miami, FL, USA
| | - Erika K Coles
- Center for Children and Families, Florida International University, Miami, FL, USA
| | - William E Pelham
- Center for Children and Families, Florida International University, Miami, FL, USA
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20
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Pinto CB, Bielefeld J, Jabakhanji R, Reckziegel D, Griffith JW, Apkarian AV. Neural and Genetic Bases for Human Ability Traits. Front Hum Neurosci 2021; 14:609170. [PMID: 33390920 PMCID: PMC7772246 DOI: 10.3389/fnhum.2020.609170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 11/25/2020] [Indexed: 11/13/2022] Open
Abstract
The judgement of human ability is ubiquitous, from school admissions to job performance reviews. The exact make-up of ability traits, however, is often narrowly defined and lacks a comprehensive basis. We attempt to simplify the spectrum of human ability, similar to how five personality traits are widely believed to describe most personalities. Finding such a basis for human ability would be invaluable since neuropsychiatric disease diagnoses and symptom severity are commonly related to such differences in performance. Here, we identified four underlying ability traits within the National Institutes of Health Toolbox normative data (n = 1, 369): (1) Motor-endurance, (2) Emotional processing, (3) Executive and cognitive function, and (4) Social interaction. We used the Human Connectome Project young adult dataset (n = 778) to show that Motor-endurance and Executive and cognitive function were reliably associated with specific brain functional networks (r 2 = 0.305 ± 0.021), and the biological nature of these ability traits was also shown by calculating their heritability (31 and 49%, respectively) from twin data.
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Affiliation(s)
- Camila Bonin Pinto
- Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States.,Center for Translational Pain Research, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Jannis Bielefeld
- Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States.,Center for Translational Pain Research, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Rami Jabakhanji
- Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States.,Center for Translational Pain Research, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Diane Reckziegel
- Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States.,Center for Translational Pain Research, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - James W Griffith
- Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - A Vania Apkarian
- Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States.,Center for Translational Pain Research, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States.,Department of Physical Medicine and Rehabilitation, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States.,Department of Anesthesiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
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21
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Ding K, Tarumi T, Tomoto T, Bell KR, Madden C, Dieppa M, Cullum CM, Zhang S, Zhang R. A proof-of-concept trial of a community-based aerobic exercise program for individuals with traumatic brain injury. Brain Inj 2021; 35:233-240. [PMID: 33385308 DOI: 10.1080/02699052.2020.1865569] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Objective: To assess the feasibility of conducting an aerobic exercise training study in a community setting for individuals with traumatic brain injury (TBI)Methods: This is a prospective, randomized, and controlled study. Nine participants (three moderate-to-severe and six mild TBI) were randomized to a community-based 3-month individualized aerobic exercise training program (AET). Seven participants (four moderate-to-severe, three mild TBI) were randomized to a stretching and toning program (SAT). Cardiorespiratory fitness (CRF) level was assessed with peak oxygen uptake (VO2peak) testing.Results: After 3 months of training, the AET trended toward improved VO2peak when compared with the SAT group (8% vs - 4%, p = .059) with a large effect size of 1.27. Only 50% of participants in the AET group completed more than 70% of the assigned exercise sessions. No adverse events were reported. Both the AET and SAT groups reported small improvements in self-reported mood symptoms, including depression, anxiety, and anger.Conclusions: It is feasible to conduct an exercise training study and improve CRF for persons with TBI in community settings with structured exercise protocols. However, exploring methods to enhance adherence is crucial for future exercise clinical trials to improve brain health in this population.
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Affiliation(s)
- Kan Ding
- Department of Neurology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Takashi Tarumi
- Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas, Dallas, TX, USA.,Human Informatics Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan
| | - Tsubasa Tomoto
- Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas, Dallas, TX, USA
| | - Kathleen R Bell
- Department of Physical Medicine and Rehabilitation, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Christopher Madden
- Department of Neurosurgery, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Marisara Dieppa
- Department of Neurology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - C Munro Cullum
- Department of Neurology, University of Texas Southwestern Medical Center, Dallas, TX, USA.,Department of Neurosurgery, University of Texas Southwestern Medical Center, Dallas, TX, USA.,Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Song Zhang
- Department of Population and Data Sciences, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Rong Zhang
- Department of Neurology, University of Texas Southwestern Medical Center, Dallas, TX, USA.,Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas, Dallas, TX, USA
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22
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Garcia A, Reljic T, Pogoda TK, Kenney K, Agyemang A, Troyanskaya M, Belanger HG, Wilde EA, Walker WC, Nakase-Richardson R. Obstructive Sleep Apnea Risk Is Associated with Cognitive Impairment after Controlling for Mild Traumatic Brain Injury History: A Chronic Effects of Neurotrauma Consortium Study. J Neurotrauma 2020; 37:2517-2527. [PMID: 32709212 PMCID: PMC7698980 DOI: 10.1089/neu.2019.6916] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The contribution of sleep disturbance to persistent cognitive symptoms following a mild traumatic brain injury (mTBI) remains unclear. Obstructive sleep apnea (OSA) is very common, yet its relationship between risk factors for developing OSA and cognitive performance in those with history of mTBI has not been investigated. The current study examined OSA risk levels and its association with cognitive performance in 391 combat-exposed, post-911 veterans and service members (median age = 37 years) enrolled in the Chronic Effects of Neurotrauma Consortium (CENC) prospective multi-center study. Participants included those with and without mTBI (n = 326 and 65, respectively). When using clinical cut-offs, those with history of mTBI were more likely to be categorized as high risk for OSA (mTBI positive = 65% vs. mTBI negative = 51%). After adjustment for TBI status and demographic variables, increased OSA risk was significantly associated with worse performance on measures of complex processing speed and executive functioning (Wechsler Adult Intelligence Scale Fourth Edition Coding, Trail Making Test, part B) and greater symptom burden (Neurobehavioral Symptom Inventory). Thus, OSA, a modifiable behavioral health factor, likely contributes to cognitive performance following mTBI. Accordingly, OSA serves as a potential point of intervention to improve clinical and cognitive outcomes after injury.
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Affiliation(s)
- Amanda Garcia
- Defense and Veterans Brain Injury Center, James A. Haley VA Hospital, Tampa, Florida, USA
- Mental Health and Behavioral Sciences and Defense and Veterans Brain Injury Center, James A. Haley VA Hospital, Tampa, Florida, USA
| | - Tea Reljic
- Morsani College of Medicine, Sleep and Pulmonary Division, University of South Florida, Tampa, Florida, USA
| | - Terri K. Pogoda
- Center for Healthcare Organization and Implementation Research, VA Boston Healthcare System, Boston, Massachusetts, USA
- Boston University School of Public Health, Boston, Massachusetts, USA
| | - Kimbra Kenney
- National Intrepid Center of Excellence, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
- Department of Neurology, Uniformed Services University, Bethesda, Maryland, USA
| | - Amma Agyemang
- Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Maya Troyanskaya
- Department of Physical Medicine and Rehabilitation, Baylor College of Medicine, Houston, Texas, USA
- Michael E. DeBakey VA Medical Center, Houston, Texas, USA
| | - Heather G. Belanger
- United States Special Operations Command, Tampa, Florida, USA
- Department of Psychology and Psychiatry and Behavioral Neurosciences, Sleep and Pulmonary Division, University of South Florida, Tampa, Florida, USA
| | - Elisabeth A. Wilde
- Department of Physical Medicine and Rehabilitation, Baylor College of Medicine, Houston, Texas, USA
- George E. Wahlen VA Salt Lake City Healthcare System, Salt Lake City, Utah, USA
- Department of Neurology, TBI and Concussion Center, University of Utah, Salt Lake City, Utah, USA
| | - William C. Walker
- Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Risa Nakase-Richardson
- Defense and Veterans Brain Injury Center, James A. Haley VA Hospital, Tampa, Florida, USA
- Mental Health and Behavioral Sciences and Defense and Veterans Brain Injury Center, James A. Haley VA Hospital, Tampa, Florida, USA
- Department of Internal Medicine, Sleep and Pulmonary Division, University of South Florida, Tampa, Florida, USA
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23
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Foy JG, Foy MR. Dynamic Changes in EEG Power Spectral Densities During NIH-Toolbox Flanker, Dimensional Change Card Sort Test and Episodic Memory Tests in Young Adults. Front Hum Neurosci 2020; 14:158. [PMID: 32508607 PMCID: PMC7248326 DOI: 10.3389/fnhum.2020.00158] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 04/14/2020] [Indexed: 11/13/2022] Open
Abstract
Much is known about electroencephalograph (EEG) patterns during sleep, but until recently, it was difficult to study EEG patterns during conscious, awake behavior. Technological advances such as powerful wireless EEG systems have led to a renewed interest in EEG as a clinical and research tool for studying real-time changes in the brain. We report here the first normative study of EEG activity while healthy young adults completed a series of cognitive tests recently published by the National Institutes of Health Toolbox Cognitive Battery (NIH-TCB), a commonly-used standardized measure of cognition primarily used in clinical populations. In this preliminary study using a wireless EEG system, we examined power spectral density (PSD) in four EEG frequency bands. During baseline and cognitive testing, PSD activity for the lower frequency bands (theta and alpha) was greater, relative to the higher frequency bands (beta and gamma), suggesting participants were relaxed and mentally alert. Alpha, beta and gamma activity was increased during a memory test compared to two other, less demanding executive function tests. Gamma activity was also inversely correlated with performance on the memory test, consistent with the neural efficiency hypothesis which proposes that better cognitive performance may link with lower cortical energy consumption. In summary, our study suggests that cognitive performance is related to the dynamics of EEG activity in a normative young adult population.
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Affiliation(s)
- Judith G. Foy
- Department of Psychology, Loyola Marymount University, Los Angeles, CA, United States
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24
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Snitz BE, Tudorascu DL, Yu Z, Campbell E, Lopresti BJ, Laymon CM, Minhas DS, Nadkarni NK, Aizenstein HJ, Klunk WE, Weintraub S, Gershon RC, Cohen AD. Associations between NIH Toolbox Cognition Battery and in vivo brain amyloid and tau pathology in non-demented older adults. ALZHEIMER'S & DEMENTIA (AMSTERDAM, NETHERLANDS) 2020; 12:e12018. [PMID: 32426450 PMCID: PMC7228102 DOI: 10.1002/dad2.12018] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 01/13/2020] [Accepted: 01/23/2020] [Indexed: 12/04/2022]
Abstract
INTRODUCTION The National Institutes of Health (NIH) Toolbox Cognition Battery (NIHTB-CB) was developed to be a common assessment metric across a broad array of research studies. We investigated associations between NIHTB-CB and brain amyloid and tau deposition in cognitively unimpaired older adults. METHODS One hundred eighteen community-based volunteers completed magnetic resonance imaging (MRI), Pittsburgh compound B (PiB)-PET (positron emission tomography) and AV-1451-PET neuroimaging, a neuropsychological evaluation, NIHTB-CB, and the Clinical Dementia Rating (CDR) scale. Demographically adjusted regression models evaluated cognition-biomarker associations; standardized effect sizes allowed comparison of association strength across measures. RESULTS No NIHTB-CB measures were associated with amyloid deposition. NIHTB-CB measures of fluid cognition, including Pattern Comparison Processing Speed, Dimensional Change Card Sort, and Fluid Cognition Composite, were associated with tau deposition in higher Braak regions. Pattern Comparison Processing Speed was the most robust association with sensitivity analyses. DISCUSSION NIHTB-CB tasks of processing speed and executive functions may be sensitive to pathologic tau deposition on imaging in normal aging.
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Affiliation(s)
- Beth E. Snitz
- Department of NeurologyUniversity of PittsburghSchool of MedicinePittsburghPennsylvania
| | - Dana L. Tudorascu
- Department of MedicineUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
| | - Zheming Yu
- Department of RadiologyUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
| | - Elizabeth Campbell
- Department of RadiologyUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
| | - Brian J. Lopresti
- Department of RadiologyUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
| | - Charles M. Laymon
- Department of RadiologyUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
- Department of BioengineeringUniversity of Pittsburgh School of EngineeringPittsburghPennsylvania
| | - Davneet S. Minhas
- Department of RadiologyUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
| | - Neelesh K. Nadkarni
- Department of MedicineUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
| | - Howard J. Aizenstein
- Department of BioengineeringUniversity of Pittsburgh School of EngineeringPittsburghPennsylvania
- Department of PsychiatryUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
| | - William E. Klunk
- Department of PsychiatryUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
| | - Sandra Weintraub
- Department of Psychiatry and Behavioral SciencesNorthwestern University Feinberg School of MedicineChicagoIllinois
| | - Richard C. Gershon
- Department of Medical Social SciencesNorthwestern University Feinberg School of MedicineChicagoIllinois
| | - Ann D. Cohen
- Department of PsychiatryUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
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25
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Kunker K, Peters DM, Mohapatra S. Long-term impact of mild traumatic brain injury on postural stability and executive function. Neurol Sci 2020; 41:1899-1907. [PMID: 32095948 DOI: 10.1007/s10072-020-04300-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 02/14/2020] [Indexed: 11/27/2022]
Abstract
OBJECTIVE A substantial number of individuals present with prolonged symptoms after a mild traumatic brain injury (mTBI) or concussion. This has warranted the development of assessment tools that can reliably detect prolonged symptoms after an mTBI. At present, a gold standard diagnostic tool for accurately identifying such prolonged symptoms is not available. The purpose of this study is to utilize specific measures of standing balance, cognitive function, and bimanual coordination to examine persisting long-term deficits in individuals with mTBI. METHODS A total of 18 (medically diagnosed with an mTBI within the last year) and 14 (healthy age-matched controls) individuals participated in the study. Assessment tools included NIH Toolbox Cognition Battery (NIHTB-CB), TEMPA, and Purdue pegboard (bimanual coordination) and standing balance on a force platform. RESULTS Individuals with mTBI demonstrated lower scores in all measures of cognition with statistically significant difference (p = 0.03) in executive function. The clinical tests of bimanual coordination did not show any statistically significant differences between groups. Postural stability was significantly reduced (p = 0.039) in the mTBI group. CONCLUSION Our results show long-term performance deficits (cognition and postural stability) that persist in individuals with mTBI. In addition, to the best of our knowledge, this is the first study to identify cognitive deficits in individuals with mTBI by utilizing NIHTB-CB. Knowledge gained from this study might affect decisions of return-to-play or return-to-learn in individuals with a history of mTBI(s).
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Affiliation(s)
- Katrina Kunker
- Department of Rehabilitation and Movement Sciences, University of Vermont, Burlington, VT, USA
| | - Denise M Peters
- Department of Rehabilitation and Movement Sciences, University of Vermont, Burlington, VT, USA
| | - Sambit Mohapatra
- Department of Rehabilitation and Movement Sciences, University of Vermont, Burlington, VT, USA.
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26
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Washnik NJ, Anjum J, Lundgren K, Phillips S. A Review of the Role of Auditory Evoked Potentials in Mild Traumatic Brain Injury Assessment. Trends Hear 2019; 23:2331216519840094. [PMID: 30995888 DOI: 10.1177/2331216519840094] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Around 75% to 90% of people who experience a traumatic brain injury (TBI) are classified as having a mild TBI (mTBI). The term mTBI is synonymous with concussion or mild head injury (MHI) and is characterized by symptoms of headache, nausea, dizziness, and blurred vision. Problems in cognitive abilities such as deficits in memory, processing speed, executive functioning, and attention are also considered symptoms of mTBI. Since these symptoms are subtle in nature and may not appear immediately following the injury, mTBI is often undetected on conventional neuropsychological tests. Current neuroimaging techniques may not be sensitive enough in identifying the array of microscopic neuroanatomical and subtle neurophysiological changes following mTBI. To this end, electrophysiological tests, such as auditory evoked potentials (AEPs), can be used as sensitive tools in tracking physiological changes underlying physical and cognitive symptoms associated with mTBI. The purpose of this review article is to examine the body of literature describing the application of AEPs in the assessment of mTBI and to explore various parameters of AEPs which may hold diagnostic value in predicting positive rehabilitative outcomes for people with mTBI.
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Affiliation(s)
- Nilesh J Washnik
- 1 Department of Communication Sciences and Disorders, Ohio University, Athens OH, USA
| | - Javad Anjum
- 2 Department of Speech and Language Pathology, University of Mary, Bismarck, ND, USA
| | - Kristine Lundgren
- 3 Department of Communication Sciences and Disorders, University of North Carolina at Greensboro, NC, USA
| | - Susan Phillips
- 3 Department of Communication Sciences and Disorders, University of North Carolina at Greensboro, NC, USA
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27
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An Overview of the Traumatic Brain Injury–Quality of Life (TBI-QOL) Measurement System. J Head Trauma Rehabil 2019; 34:281-288. [DOI: 10.1097/htr.0000000000000531] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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28
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Psychometric Properties of the NIH Toolbox Cognition Battery in Healthy Older Adults: Reliability, Validity, and Agreement with Standard Neuropsychological Tests. J Int Neuropsychol Soc 2019; 25:857-867. [PMID: 31256769 PMCID: PMC6733640 DOI: 10.1017/s1355617719000614] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE Few independent studies have examined the psychometric properties of the NIH Toolbox Cognition Battery (NIHTB-CB) in older adults, despite growing interest in its use for clinical purposes. In this paper we report the test-retest reliability and construct validity of the NIHTB-CB, as well as its agreement or concordance with traditional neuropsychological tests of the same construct to determine whether tests could be used interchangeably. METHODS Sixty-one cognitively healthy adults ages 60-80 completed "gold standard" (GS) neuropsychological tests, NIHTB-CB, and brain MRI. Test-retest reliability, convergent/discriminant validity, and agreement statistics were calculated using Pearson's correlations, concordance correlation coefficients (CCC), and root mean square deviations. RESULTS Test-retest reliability was acceptable (CCC = .73 Fluid; CCC = .85 Crystallized). The NIHTB-CB Fluid Composite correlated significantly with cerebral volumes (r's = |.35-.41|), and both composites correlated highly with their respective GS composites (r's = .58-.84), although this was more variable for individual tests. Absolute agreement was generally lower (CCC = .55 Fluid; CCC = .70 Crystallized) due to lower precision in fluid scores and systematic overestimation of crystallized composite scores on the NIHTB-CB. CONCLUSIONS These results support the reliability and validity of the NIHTB-CB in healthy older adults and suggest that the fluid composite tests are at least as sensitive as standard neuropsychological tests to medial temporal atrophy and ventricular expansion. However, the NIHTB-CB may generate different estimates of performance and should not be treated as interchangeable with established neuropsychological tests.
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29
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Brearly TW, Rowland JA, Martindale SL, Shura RD, Curry D, Taber KH. Comparability of iPad and Web-Based NIH Toolbox Cognitive Battery Administration in Veterans. Arch Clin Neuropsychol 2019; 34:524-530. [PMID: 30260372 PMCID: PMC9586718 DOI: 10.1093/arclin/acy070] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 08/01/2018] [Accepted: 08/08/2018] [Indexed: 10/18/2023] Open
Abstract
OBJECTIVE The purpose of this study was to evaluate the comparability of National Institutes of Health Toolbox Cognitive Battery test scores across iPad application and web-based personal computer administration platforms. Original test norms were developed using a personal computer-based administration and no previous studies assessing platform comparability have been published. METHOD Participants (N = 62; final analyzed sample n = 49) were combat-exposed post-deployment veterans without neurologic disorder, severe mental illness, current substance use disorder, or a history of moderate or severe traumatic brain injury. All participants completed both iPad and web-based versions of tests on the same day in an experimental within-subjects crossover design. Standalone validity measures were incorporated to exclude invalid performance. Outcome measures included the Dimensional Change Card Sort Test, Flanker Inhibitory Control and Attention Test, List Sorting Working Memory Test, and Pattern Comparison Processing Speed Test. RESULTS Score differences between platforms were found on the Flanker Inhibitory Control and Attention Test. Scores were moderately correlated across tests, with the exception of low correlations for the Pattern Comparison Processing Speed Test. Most participants preferred iPad to web administration, regardless of administration order. CONCLUSIONS Results suggest caution when interpreting iPad-acquired scores, particularly for the Flanker Inhibitory Control and Attention Test. iPad-based testing offers valuable improvements; however, the development of iPad-specific norms may be necessary to ensure valid interpretation of acquired data.
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Affiliation(s)
- Timothy W. Brearly
- Mid-Atlantic Mental Illness Research, Education, and Clinical Center and Research & Academic Affairs Service Line, Salisbury VA Health Care System, Salisbury, NC, USA
- Neuropsychology Assessment Service, Directorate of Behavioral Health (Consultation & Education), Walter Reed National Military Medical Center, Bethesda, MD, USA
- Department of Psychiatry and Behavioral Sciences, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Jared A. Rowland
- Mid-Atlantic Mental Illness Research, Education, and Clinical Center and Research & Academic Affairs Service Line, Salisbury VA Health Care System, Salisbury, NC, USA
- Department of Psychiatry and Behavioral Sciences, Wake Forest School of Medicine, Winston-Salem, NC, USA
- Department of Neurobiology & Anatomy, Wake Forest School of Medicine, Winston-Salem, NC, USA
- Mid-Atlantic Mental Illness Research, Education, and Clinical Center and Mental Health & Behavioral Sciences Service Line, Salisbury VA Health Care System, Salisbury, NC, USA
| | - Sarah L. Martindale
- Mid-Atlantic Mental Illness Research, Education, and Clinical Center and Research & Academic Affairs Service Line, Salisbury VA Health Care System, Salisbury, NC, USA
- Department of Psychiatry and Behavioral Sciences, Wake Forest School of Medicine, Winston-Salem, NC, USA
- Mid-Atlantic Mental Illness Research, Education, and Clinical Center and Mental Health & Behavioral Sciences Service Line, Salisbury VA Health Care System, Salisbury, NC, USA
| | - Robert D. Shura
- Department of Psychiatry and Behavioral Sciences, Wake Forest School of Medicine, Winston-Salem, NC, USA
- Mid-Atlantic Mental Illness Research, Education, and Clinical Center and Mental Health & Behavioral Sciences Service Line, Salisbury VA Health Care System, Salisbury, NC, USA
- Via College of Osteopathic Medicine, Blacksburg, VA, USA
| | - David Curry
- Mid-Atlantic Mental Illness Research, Education, and Clinical Center and Research & Academic Affairs Service Line, Salisbury VA Health Care System, Salisbury, NC, USA
| | - Kathy H. Taber
- Mid-Atlantic Mental Illness Research, Education, and Clinical Center and Research & Academic Affairs Service Line, Salisbury VA Health Care System, Salisbury, NC, USA
- Via College of Osteopathic Medicine, Blacksburg, VA, USA
- Baylor College of Medicine, Houston, TX, USA
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30
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Babakhanyan I, Carlozzi NE, McKenna BS, Casaletto KB, Heinemann AW, Heaton RK. National Institutes of Health Toolbox Emotion Battery: Application of Summary Scores to Adults With Spinal Cord Injury, Traumatic Brain Injury, and Stroke. Arch Phys Med Rehabil 2019; 100:1863-1871. [PMID: 31153854 DOI: 10.1016/j.apmr.2019.05.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 03/23/2019] [Accepted: 05/04/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To examine the validity of factor analytically based summary scores that were developed using the National Institutes of Health Toolbox Emotion Battery (NIHTB-EB); (ie, psychological well-being, social satisfaction, negative affect) normative sample in individuals with neurologic conditions. DESIGN Cross-sectional, observational cohort. SETTING Community. PARTICIPANTS A total of 1036 English-speaking adults from the National Institutes of Health Toolbox (NIHTB) normative project and 604 community-dwelling adults with neurologic conditions including spinal cord injury (SCI n=209), traumatic brain injury (TBI n=184), and stroke (cerebrovascular accident [CVA] n=211) (N=1640). INTERVENTION Not applicable. MAIN OUTCOME MEASURES The NIHTB-EB. RESULTS A series of univariate analyses comparing summary scores across the 4 groups (SCI, TBI, CVA, normative group) were conducted to identify group differences. Base rates (defined as >1 SD toward the problematic direction) were also identified. The normative group demonstrated better emotional functioning characterized by greater social satisfaction and psychological well-being (normative group > SCI, TBI, CVA; P's <.0001), and less negative affect (normative group < SCI, P=.016; normative group < TBI, P<.001; normative group < CVA; P=.034) compared with each neurologic group. Using base rates to identify problematic emotions for the 3 summary scores, there were higher rates of problematic emotions on all 3 summary scores for the neurologic groups compared with the normative group. CONCLUSIONS The NIHTB-EB summary scores demonstrate an increased prevalence of problematic emotions among individuals with 3 neurologic conditions, and might be useful for identifying individuals with similar conditions and potentially in need of psychological support.
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Affiliation(s)
- Ida Babakhanyan
- Department of Psychiatry, University of California San Diego, San Diego, CA.
| | - Noelle E Carlozzi
- Department of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor, MI
| | - Benjamin S McKenna
- Department of Psychiatry, University of California San Diego, San Diego, CA
| | - Kaitlin B Casaletto
- Memory and Aging Center, University of California San Francisco, Department of Neurology, San Francisco, CA
| | - Allen W Heinemann
- Shirley Ryan AbilityLab and Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL
| | - Robert K Heaton
- Department of Psychiatry, University of California San Diego, San Diego, CA
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Siddiqi SH, Trapp NT, Hacker CD, Laumann TO, Kandala S, Hong X, Trillo L, Shahim P, Leuthardt EC, Carter AR, Brody DL. Repetitive Transcranial Magnetic Stimulation with Resting-State Network Targeting for Treatment-Resistant Depression in Traumatic Brain Injury: A Randomized, Controlled, Double-Blinded Pilot Study. J Neurotrauma 2019; 36:1361-1374. [PMID: 30381997 DOI: 10.1089/neu.2018.5889] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Repetitive transcranial magnetic stimulation (rTMS) has demonstrated antidepressant efficacy but has limited evidence in depression associated with traumatic brain injury (TBI). Here, we investigate the use of rTMS targeted with individualized resting-state network mapping (RSNM) of dorsal attention network (DAN) and default mode network (DMN) in subjects with treatment-resistant depression associated with concussive or moderate TBI. The planned sample size was 50 with first interim analysis planned at 20, but only 15 were enrolled before the study was terminated for logistical reasons. Subjects were randomized to 20 sessions of bilateral rTMS (4000 left-sided excitatory pulses, 1000 right-sided inhibitory pulses) or sham. Treatment was targeted to the dorsolateral prefrontal cluster with maximal difference between DAN and DMN correlations based on resting-state functional magnetic resonance imaging with individualized RSNM. Mean improvement in the primary outcome, Montgomery-Asberg Depression Rating Scale (MADRS), was 56% ± 14% (n = 9) with active treatment and 27% ± 25% (n = 5) with sham (Cohen's d = 1.43). One subject randomized to sham withdrew before starting treatment. There were no seizures or other significant adverse events. MADRS improvement was inversely correlated with functional connectivity between the right-sided stimulation site and the subgenual anterior cingulate cortex (sgACC; r = -0.68, 95% confidence interval 0.03-0.925). Active treatment led to increased sgACC-DMN connectivity (d = 1.55) and increased sgACC anti-correlation with the left- and right-sided stimulation sites (d = -1.26 and -0.69, respectively). This pilot study provides evidence that RSNM-targeted rTMS is feasible in TBI patients with depression. Given the dearth of existing evidence-based treatments for depression in this patient population, these preliminarily encouraging results indicate that larger controlled trials are warranted.
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Affiliation(s)
- Shan H Siddiqi
- 1 Department of Neurology, McLean Hospital, Belmont, Massachusetts.,2 Center for Neuroscience and Regenerative Medicine, National Institutes of Health/Uniformed Services University of Health Sciences Traumatic Brain Injury Research Group, Bethesda, Maryland.,3 Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri
| | - Nicholas T Trapp
- 6 Department of Psychiatry, University of Iowa Carver College of Medicine, University of Iowa, Iowa City, Iowa
| | - Carl D Hacker
- 4 Department of Neurosurgery, Washington University School of Medicine, St. Louis, Missouri
| | - Timothy O Laumann
- 3 Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri
| | - Sridhar Kandala
- 3 Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri
| | - Xin Hong
- 5 Department of Neurology, Washington University School of Medicine, St. Louis, Missouri
| | - Ludwig Trillo
- 3 Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri
| | - Pashtun Shahim
- 2 Center for Neuroscience and Regenerative Medicine, National Institutes of Health/Uniformed Services University of Health Sciences Traumatic Brain Injury Research Group, Bethesda, Maryland
| | - Eric C Leuthardt
- 4 Department of Neurosurgery, Washington University School of Medicine, St. Louis, Missouri
| | - Alexandre R Carter
- 5 Department of Neurology, Washington University School of Medicine, St. Louis, Missouri
| | - David L Brody
- 2 Center for Neuroscience and Regenerative Medicine, National Institutes of Health/Uniformed Services University of Health Sciences Traumatic Brain Injury Research Group, Bethesda, Maryland.,5 Department of Neurology, Washington University School of Medicine, St. Louis, Missouri
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Hackett K, Krikorian R, Giovannetti T, Melendez-Cabrero J, Rahman A, Caesar EE, Chen JL, Hristov H, Seifan A, Mosconi L, Isaacson RS. Utility of the NIH Toolbox for assessment of prodromal Alzheimer's disease and dementia. ALZHEIMER'S & DEMENTIA: DIAGNOSIS, ASSESSMENT & DISEASE MONITORING 2018; 10:764-772. [PMID: 30505926 PMCID: PMC6247399 DOI: 10.1016/j.dadm.2018.10.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Introduction The NIH Toolbox Cognition Battery (NIHTB-CB) is a computer-based protocol not yet validated for clinical assessment. Methods We administered the NIHTB-CB and traditional neuropsychological tests to 247 Memory Disorders and Alzheimer's Prevention Clinic patients with subjective cognitive decline, mild cognitive impairment, mild dementia due to Alzheimer's disease, and normal cognition. Principal component analysis, partial correlations, and univariate general linear model tests were performed to assess construct validity. Discriminant function analyses compared classification accuracy. Results Principal component analysis identified three conceptually coherent factors: memory (MEMNIH), executive function (EFNIH), and crystallized intelligence (CINIH). These factors were strongly associated with corresponding traditional tests and differed across diagnostic groups as expected. Both NIHTB and traditional batteries yielded strong overall discriminative ability (>80%). Discussion The NIHTB-CB is a valid method to assess neurocognitive domains pertinent to aging and dementia and has utility for applications in a memory clinic setting.
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Affiliation(s)
- Katherine Hackett
- Department of Psychology, Temple University, Philadelphia, PA, USA
- Corresponding author. Tel.: +914-582-7581; Fax: +215-204-5539.
| | - Robert Krikorian
- Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | | | | | - Aneela Rahman
- Department of Neurology, Weill Cornell Medicine and NewYork-Presbyterian, New York, NY, USA
| | | | - Jaclyn L. Chen
- Stony Brook University School of Medicine, New York, NY, USA
| | - Hollie Hristov
- Department of Neurology, Weill Cornell Medicine and NewYork-Presbyterian, New York, NY, USA
| | | | - Lisa Mosconi
- Department of Neurology, Weill Cornell Medicine and NewYork-Presbyterian, New York, NY, USA
| | - Richard S. Isaacson
- Department of Neurology, Weill Cornell Medicine and NewYork-Presbyterian, New York, NY, USA
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Holdnack JA, Tulsky DS, Slotkin J, Tyner CE, Gershon R, Iverson GL, Heinemann AW. Nih toolbox premorbid ability adjustments: Application in a traumatic brain injury sample. Rehabil Psychol 2018; 62:496-508. [PMID: 29265870 DOI: 10.1037/rep0000198] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
PURPOSE/OBJECTIVE Metrics to estimate premorbid cognitive ability, such as word reading tests, are important for clinical determination of cognitive changes following brain injury. In the present study, reading adjusted scores for the National Institutes of Health Toolbox Cognition Battery (NIHTB-CB) fluid tests were developed and validated with a sample of individuals with traumatic brain injury (TBI), to evaluate the clinical utility of reading-adjusted scores. Research Method/Design: The development sample included 843 adult participants, ages 20-85, from the NIHTB-CB standardization sample. A sample of 158 participants with complicated mild or moderate TBI (n = 74) or severe TBI (n = 84) were administered the NIHTB-CB, and comprised the validation sample. Scores were derived for the five fluid tests using four adjustment models: age-only, demographic-only, age-and-reading, and demographic-and-reading referenced scores. RESULTS Estimated premorbid ability varies depending on the reference model. Scores from each of the four reference models differentiated the comparison and TBI samples at the group level. However, performance varied by premorbid ability. CONCLUSIONS/IMPLICATIONS Premorbid ability affects identification of cognitive difficulties after TBI. Reading referenced scores provide an individualized estimate of the effects of premorbid ability than demographic characteristics alone. Each model identified a similar number of individuals as having cognitive difficulties; however, the models differed on which individuals had cognitive difficulties. The models had higher disagreement rates in the clinical compared with the comparison sample, particularly for individuals with lower premorbid ability. Clinical use and caveats are discussed. (PsycINFO Database Record
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Affiliation(s)
- James A Holdnack
- The Center for Health Assessment Research and Translation, University of Delaware
| | - David S Tulsky
- The Center for Health Assessment Research and Translation, University of Delaware
| | - Jerry Slotkin
- The Center for Health Assessment Research and Translation, University of Delaware
| | - Callie E Tyner
- The Center for Health Assessment Research and Translation, University of Delaware
| | - Richard Gershon
- Department of Medical Social Sciences, Northwestern University
| | - Grant L Iverson
- Department of Physical Medicine and Rehabilitation, Harvard Medical School
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Holdnack JA, Iverson GL, Silverberg ND, Tulsky DS, Heinemann AW. NIH toolbox cognition tests following traumatic brain injury: Frequency of low scores. Rehabil Psychol 2018; 62:474-484. [PMID: 29265868 DOI: 10.1037/rep0000145] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
PURPOSE/OBJECTIVE To apply multivariate base rate analyses to the National Institutes of Health Toolbox Cognition Battery (NIHTB-CB) to facilitate the identification of cognitive impairment in individuals with traumatic brain injury (TBI). Research Method/Design: In a multisite cross-sectional design, 158 participants who sustained a complicated mild or moderate TBI (n = 74) or severe TBI (n = 84) at least 1 year earlier were administered the NIHTB-CB. The NIHTB-CB is comprised of 2 crystallized cognition tests (reflecting premorbid ability) and 5 fluid cognition tests, measuring processing speed, memory, and executive functioning. Base rates for obtaining 0 to 5 low fluid cognition scores were calculated across a range of cutoffs for defining a low test score (≤25th to 5th percentiles). Base rates of low scores in the TBI sample were compared to the NIHTB-CB normative sample using diagnostic accuracy statistics. RESULTS The proportion of the TBI sample obtaining low scores decreased as the cutoff for defining a low score decreased. Individuals with lower premorbid cognitive ability, as measured by NIHTB-CB Crystallized Composite score, tended to produce more low scores on the NIHTB-CB fluid cognition tests, even when using fully demographically adjusted scores. Certain patterns of low scores were associated with TBI (defined as likelihood ratio >2.0), whereas others were nonspecific, occurring almost as often in participants without TBI. CONCLUSIONS/IMPLICATIONS Premorbid ability stratified base rate tables provided in this article can guide researchers and clinicians in the interpretation of NIHTB-CB performance in adults with TBI. (PsycINFO Database Record
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Affiliation(s)
- James A Holdnack
- The Center for Health Assessment Research and Translation, University of Delaware
| | - Grant L Iverson
- Department of Physical Medicine and Rehabilitation, Harvard Medical School
| | - Noah D Silverberg
- Division of Physical Medicine & Rehabilitation, Department of Medicine, University of British Columbia
| | - David S Tulsky
- The Center for Health Assessment Research and Translation, Departments of Physical Therapy, Psychological and Brain Sciences, University of Delaware
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Magasi S, Harniss M, Tulsky DS, Cohen ML, Heaton RK, Heinemann AW. Test accommodations for individuals with neurological conditions completing the NIH Toolbox-Cognition Battery: An evaluation of frequency and appropriateness. Rehabil Psychol 2018; 62:455-463. [PMID: 29265866 DOI: 10.1037/rep0000191] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVES First, to evaluate the frequency with which individuals with neurological conditions require test administration accommodations for the NIH Toolbox-Cognition Battery (NIHTB-CB). Second, to evaluate the appropriateness of accommodations provided by administrators, including adherence to NIHTB-CB Reasonable Accommodations Guidelines. METHOD Adults with traumatic brain injury, spinal cord injury, or stroke (n = 604) completed the NIHTB-CB and other assessments as part of a multisite study. We provide a descriptive, secondary analysis of test administrator notes to determine use and appropriateness of accommodations. RESULTS Of the 604 participants, 450 (75%) completed the NIHTB-CB using standard administration procedures, but 137 (22.6%) encountered accessibility challenges that required accommodations. Participants with motor function impairments were most likely to receive at least 1 of 3 kinds of accommodations: (a) use of nonstandard methods of entering responses using standard input devices, (b) use of alternate input devices, or (c) help from the test administrator to enter a response. Fatigue and/or impulsivity led to nonstandard administration by 48 (7.9%) individuals. Post hoc audit of test administrator notes revealed that despite careful instructions and supervision, 49 (56.3%) of the accommodated administrations breached standardization and scores could not be interpreted using test norms. CONCLUSION Although the NIHTB-CB was developed for individuals without neurological impairment, most individuals with neurological conditions completed the standardized administration without accommodations. When accommodations were needed, administrators did not adhere to the official Reasonable Accommodations Guidelines in more than half of the cases. (PsycINFO Database Record
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Affiliation(s)
- Susan Magasi
- Departments of Occupational Therapy and Disability Studies, University of Illinois at Chicago
| | - Mark Harniss
- Department of Rehabilitation Medicine, University of Washington
| | - David S Tulsky
- Center on Assessment Research and Translation, University of Delaware
| | - Matthew L Cohen
- Department of Communication Sciences, University of Delaware
| | - Robert K Heaton
- Department of Psychiatry, University of California, San Diego
| | - Allen W Heinemann
- Department of Physical Medicine and Rehabilitation, Northwestern University, and the Shirley Ryan AbilityLab
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Carlozzi NE, Goodnight S, Umlauf A, Heaton RK, Heinemann AW, Schalet BD, Gershon RC, Tulsky DS. Motor-free composites from the National Institutes of Health Toolbox Cognition Battery (NIHTB-CB) for people with disabilities. Rehabil Psychol 2018; 62:464-473. [PMID: 29265867 DOI: 10.1037/rep0000185] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
PURPOSE/OBJECTIVE The National Institutes of Health Toolbox Cognition Battery (NIHTB-CB) includes a group of brief measures (i.e., 30 min) designed to assess language, processing speed, working memory, episodic memory, and executive functioning. These subtests can be combined to create composite scores that reflect fluid and crystallized cognition, as well as overall cognition. The battery is of limited utility with individuals who have impaired upper extremity motor functioning. This manuscript examines the accuracy of the Oral Symbol Digit Modalities Test as a substitute for the Pattern Comparison Processing Speed Test for computing motor-free composite scores. Research Method/Design: Individuals with spinal cord injury (SCI; n = 188), traumatic brain injury (TBI; n = 159), or stroke (n = 180) completed the NIHTB-CB. We used the Oral Symbol Digit Modalities Test to create a Motor-Free Pattern Comparison score; this was used to create revised, Motor-Free Composite scores for Fluid Cognition and Overall Cognition. RESULTS Although there were statistically significant overall differences between the two Fluid and Overall Cognition composite scores for some of the clinical groups (scores based on the motor-free approach were significantly higher than the original score), these differences were small and partly because of overclassification of impaired processing speed in participants with motor impairment. There was good to substantial agreement with regard to "impairment" classification between the two sets of Original and Motor-Free composite scores. CONCLUSIONS/IMPLICATIONS Although the Motor-Free scores are not a perfect match for the Original Composite scores, they provide a reliable and valid way to examine overall and fluid cognition in individuals with upper extremity motor impairments. (PsycINFO Database Record
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Affiliation(s)
- Noelle E Carlozzi
- Department of Physical Medicine and Rehabilitation, University of Michigan
| | - Siera Goodnight
- Department of Physical Medicine and Rehabilitation, University of Michigan
| | - Anya Umlauf
- Department of Psychiatry, University of California San Diego
| | - Robert K Heaton
- Department of Psychiatry, University of California San Diego
| | | | - Benjamin D Schalet
- Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University
| | - Richard C Gershon
- Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University
| | - David S Tulsky
- Center for Health Assessment Research and Translation, University of Delaware
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Tulsky DS, Holdnack JA, Cohen ML, Heaton RK, Carlozzi NE, Wong AWK, Boulton AJ, Heinemann AW. Factor structure of the NIH Toolbox Cognition Battery in individuals with acquired brain injury. Rehabil Psychol 2018; 62:435-442. [PMID: 29265864 DOI: 10.1037/rep0000183] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE The National Institutes of Health Toolbox Cognition Battery (NIHTB-CB) measures reading, vocabulary, episodic memory, working memory, executive functioning, and processing speed. While previous research has validated the factor structure in healthy adults, the factor structure has not been examined in adults with neurological impairments. Thus, this study evaluated the NIHTB-CB factor structure in individuals with acquired brain injury. METHOD A sample of 392 individuals (ages 18-84) with acquired brain injury (n = 182 TBI, n = 210 stroke) completed the NIHTB-CB along with neuropsychological tests as part of a larger, multisite research project. RESULTS Confirmatory factor analyses supported a 5-factor solution that included reading, vocabulary, episodic memory, working memory, and processing speed/executive functioning. This structure generally held in TBI and stroke subsamples as well as in subsamples of those with severe TBI and stroke injuries. CONCLUSIONS The factor structure of the NIHTB-CB is similar in adults with acquired brain injury to adults from the general population. We discuss the implications of these findings for clinical practice and clinical research. (PsycINFO Database Record
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Affiliation(s)
- David S Tulsky
- Departments of Physical Therapy and Psychological and Brain Sciences, University of Delaware
| | - James A Holdnack
- The Center on Health Assessment Research and Translation, University of Delaware
| | - Matthew L Cohen
- The Center on Health Assessment Research and Translation, University of Delaware
| | - Robert K Heaton
- Department of Psychiatry, University of California-San Diego School of Medicine
| | - Noelle E Carlozzi
- Center for Clinical Outcomes Development and Application, University of Michigan Medical Center
| | - Alex W K Wong
- Department of Occupational Therapy and Neurology, Washington University School of Medicine
| | - Aaron J Boulton
- The Center for Health Assessment Research and Translation, University of Delaware
| | - Allen W Heinemann
- Department of Physical Medicine and Rehabilitation, Feinberg School of Medicine, Northwestern University
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Terry DP, Brassil M, Iverson GL, Panenka WJ, Silverberg ND. Effect of depression on cognition after mild traumatic brain injury in adults. Clin Neuropsychol 2018; 33:124-136. [DOI: 10.1080/13854046.2018.1459853] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Douglas P. Terry
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, USA
- , Spaulding Rehabilitation Hospital, Boston, MA, USA
- , Home Base, A Red Sox Foundation and Massachusetts General Hospital Program, Boston, MA, USA
- , MassGeneral Hospital for Children Sport Concussion Program, Boston, MA, USA
| | - Michelle Brassil
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, USA
- , Spaulding Rehabilitation Hospital, Boston, MA, USA
| | - Grant L. Iverson
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, USA
- , Spaulding Rehabilitation Hospital, Boston, MA, USA
- , Home Base, A Red Sox Foundation and Massachusetts General Hospital Program, Boston, MA, USA
- , MassGeneral Hospital for Children Sport Concussion Program, Boston, MA, USA
| | - William J. Panenka
- British Columbia Neuropsychiatry Program, University of British Columbia, Vancouver, Canada
- Department of Psychiatry, University of British Columbia, Vancouver, Canada
| | - Noah D. Silverberg
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, USA
- Division of Physical Medicine & Rehabilitation, University of British Columbia,Vancouver, Canada
- Rehabilitation Research Program, Vancouver Coastal Health Research Institute, GF Strong Rehab Centre, Vancouver, Canada
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Tulsky DS, Heinemann AW. The clinical utility and construct validity of the NIH Toolbox Cognition Battery (NIHTB-CB) in individuals with disabilities. Rehabil Psychol 2017; 62:409-412. [PMID: 29265861 PMCID: PMC10801711 DOI: 10.1037/rep0000201] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
A State-of-the-Science conference on measurement with disability populations recommended "...the development of cognitive and psychosocial outcome measures, using computer-adaptive testing...that are low in respondent burden and valid across patient populations," (Clohan et al., 2007, p. 1537). Following this recommendation, the National Institute on Disability, Independent Living, and Rehabilitation Research (NIDILRR) prioritized the development of measures of cognitive functioning for individuals with disabilities, noting that measures of cognitive functioning "have not been developed for systemic application in the field of medical rehabilitation. Cognition is both a rehabilitation outcome and a factor related to broader functional and community outcomes for individuals with a wide variety of disabling conditions" (Office of Special Education & Rehabilitation Services, 2009, p. 37193). From this came the NIH Toolbox for the Assessment of Neurological and Behavioral Function project (NIH Toolbox) which provides a comprehensive set of cognitive, motor, sensory, and emotional health and function measures for use in clinical, longitudinal, and epidemiological research. The nine papers comprising this special section of Rehabilitation Psychology reflect the sustained collaborative efforts of more than two dozen investigators working at six sites over the past 8 years. They are an initial attempt to validate the NIHTB-CB in disability samples, and they provide initial evidence that the NIHTB-CB can be used with individuals who have TBI, SCI, or stroke. The articles published here reflect the fulfillment of recommendations made during a state-of-the-science conference in 2007. (PsycINFO Database Record
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Affiliation(s)
- David S Tulsky
- Center for Health Assessment Research and Translation, University of Delaware
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Holdnack JA, Tulsky DS, Brooks BL, Slotkin J, Gershon R, Heinemann AW, Iverson GL. Interpreting Patterns of Low Scores on the NIH Toolbox Cognition Battery. Arch Clin Neuropsychol 2017; 32:574-584. [PMID: 28419177 PMCID: PMC5860176 DOI: 10.1093/arclin/acx032] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 02/06/2017] [Accepted: 03/29/2017] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION The National Institutes of Health Toolbox for Assessment of Neurological and Behavioral Function Cognition Battery is comprised of seven cognitive tests, including two tests measuring crystallized cognitive ability (i.e., vocabulary and reading) and five tests measuring fluid cognitive functioning (i.e., working memory, memory, speed of processing, and executive functioning). This study presents comprehensive base rate tables for the frequency of low scores in adults and older adults from the normative sample. METHODS Participants were 843 adults, ages 20-85, from the NIH Toolbox standardization sample who completed all seven cognition tests. Rates of low scores were derived for standard age-adjusted and fully-demographically-adjusted scores at multiple cut-scores. Base rates were stratified by education, crystallized intellectual ability, and cognitive domain. RESULTS Using the five demographically-adjusted fluid cognitive test scores, 45.9% of adults obtained one or more scores at or below the 16th percentile, and 16.8% obtained one or more score at or below the 5th percentile, which is consistent with findings from other neurocognitive test batteries. DISCUSSION Based on the study findings, nearly 50% of adults in the general population would meet psychometric criteria for a diagnosis of the Diagnostic and Statistical Manual of Mental Disorders-Fifth Edition (DSM-5) Mild Neurocognitive Disorder (MND). We developed new psychometric criteria for identifying MND using the NIH Toolbox Cognition Battery that reduce the false positive rate. Knowing these multivariate normative base rates will help researchers and clinicians interpret NIH Toolbox scores in people with neurodevelopmental, psychiatric, medical, neurological, and neurodegenerative disorders that affect cognitive functioning.
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Affiliation(s)
- James A. Holdnack
- Center on Assessment Research and Translation, University of Delaware, USA
| | - David S. Tulsky
- Center on Assessment Research and Translation & and Departments of Physical Therapy, Psychological and Brain Sciences, University of Delaware, USA
| | - Brian L. Brooks
- Neurosciences Program (Brain Injury and Rehabilitation), Alberta Children's Hospital, Alberta, Canada
- Departments of Paediatrics, Clinical Neurosciences, and Psychology, University of Calgary, Alberta, Canada
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
| | - Jerry Slotkin
- Center on Assessment Research and Translation, University of Delaware, USA
| | - Richard Gershon
- Department of Medical Social Sciences
- Division of Biomedical Informatics, Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, USA
| | - Allen W. Heinemann
- Northwestern University Feinberg School of Medicine, Rehabilitation Institute of Chicago, USA
| | - Grant L. Iverson
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, USA
- Spaulding Rehabilitation Hospital, USA
- MassGeneral Hospital for Children™ Sports Concussion Program, USA
- Home Base, A Red Sox Foundation and Massachusetts General Hospital Program, USA
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