Criteria for assessing the tools of disability outcomes research

Validity and reliability of the Brazilian activities-specific balance confidence scale and determinants of balance confidence in community-dwelling older adults

Introduction: The Activities-specific Balance Confidence scale is the most used tool to quantify balance confidence, a psychological factor related to balance impairment among older adults. Objective: To investigate the validity and reliability of the original and short versions of the Brazilian Activities-specific Balance Confidence scales, to determine cutoff points for balance impairments and to identify the determinants of balance confidence of community-dwelling older adults.Methods: The validity of both versions of the scales was verified by correlating its results with postural balance, fear of falling and mobility (n = 105). Both scales were administered with a 30 min (interrater reliability, n = 158) and 1-week intervals (intrarater reliability, n = 105). Receiver operating characteristic curve was used to determine the cutoff points, and linear regression was applied to identify the determinants of balance confidence.Results: The Brazilian versions of the scale correlated to postural balance, fear of falling and mobility (p < .05). Excellent interrater (α = 0.946, 95% CI: 0.902-0.976; α = 0.932, 95% CI: 0.918-0.960) and intrarater reliability (α = 0.946, 95% CI: 0.905-0.960; α = 0.952, 95% CI: 0.921-0.965) were found for the original and short versions.  Values of ≤67% (sensitivity: 81%, specificity: 77.4%) and ≤44% (sensitivity: 87.5%, specificity: 82.1%) were observed to identify balance impairments for the original and short versions of the scale. Physical inactivity, fear of falling, imbalance sensation, and number of falls are the main determinants of balance confidence.Conclusion: Both scales are valid and reliable to assess balance confidence. Cutoff points to identify balance impairments were determined and some factors may act as possible predictors of balance confidence.

The Being Taken Seriously Questionnaire-Development and Psychometric Evaluation of a PREM Measure for Person-Centeredness in a High-Tech Hospital Environment

There is a need for patient-reported experience measures (PREMs) in high-tech hospital environments based on the philosophy of person-centeredness. The aim of this study was to describe the development and initial psychometric evaluation of a measure of person-centeredness by means of being taking seriously. In this cross-sectional survey, the study sample (n = 79) completed two measures, the Being Taken Seriously Questionnaire—Patient version (BTSQ-P) which was the measure undergoing psychometric evaluation, and the Person-Centered Climate Questionnaire—Patient version (PCQ-P) that was used to evaluate the climate in which the intervention was occurring. The expected scale dimensionality was examined both by the confirmatory multi-trait analysis program and by explorative principal component analysis (with oblique, varimax rotation). Scale reliability was estimated using ordinal alpha and Cronbach’s alpha. One solid factor was generated. This factor had good internal convergent validity and good item–scale reliability, covering 80.41% of the variance. The interitem correlation ranged from 0.759 to 0.908 and the alpha was 0.93 (ordinal alpha) and 0.87 (Cronbach’s alpha) respectively. There was a strong relationship between BTSQ-P and the PCQ-P dimension safety climate. In conclusion, the internal consistency, reliability and concurrent validity of the BTSQ-P was satisfactory for use in a high-tech hospital environment.

Cross-cultural adaptation and validation of the Slovenian version of the Core outcome measures index for low back pain

BACKGROUND

To conduct a cross-cultural adaptation and validation of the Core Outcome Measures Index (COMI) in the Slovenian language, for use in patients with low back pain.

METHODS

The English version of COMI was translated into Slovene following established guidelines. Three hundred fifty-three patients with chronic low back pain were recruited from the Orthopedic clinic department of a tertiary care teaching institution. Data quality, construct validity, responsiveness, and test-retest reliability of the COMI were assessed.

RESULTS

The questionnaire was generally well accepted with no missing values. The majority of items exhibited only mild ceiling effects (below 20.0%) and somewhat more prominent floor effects, which were similar to previous studies (4.5-78.8%). Correlations with Oswestry Disability Index (ODI) were high (ρ = 0.76 between overall COMI and ODI scores), suggesting that the Slovene version of COMI had high construct validity. Additionally, the Slovene version of COMI successfully captured surgical patients' improvement in their low back problem after surgery (overall COMI score change: Z = - 9.34, p < .001, r = - 0.53) and showed acceptable test-retest reliability (ICC = 0.86).

CONCLUSIONS

The Slovene version of COMI showed good psychometric properties, comparable to those of previously tested language versions. It represents a valuable instrument for the use in future domestic and multicenter clinical studies.

Validity of the Comprehensive High-Level Activity Mobility Predictor in a heterogeneous population with lower extremity amputations

BACKGROUND AND OBJECTIVE

Lower extremity amputee outcome measures assess basic mobility. The Comprehensive High-Level Activity Mobility Predictor was developed to assess high-level mobility. Validity evidence was collected in military men with traumatic lower extremity amputations. This study examines its validity in a broader population.

STUDY DESIGN

Cross-sectional.

METHODS

Forty-five lower extremity amputees (Medicare Functional Classification Level K3 or K4) completed the 2-min walk test, Amputee Mobility Predictor with Prosthesis, and Comprehensive High-Level Activity Mobility Predictor.

RESULTS

The Comprehensive High-Level Activity Mobility Predictor correlated with the Amputee Mobility Predictor with Prosthesis (r = 0.77, p < 0.01) and the 2-min walk test (r = 0.65, p < 0.01). The Comprehensive High-Level Activity Mobility Predictor differentiated between K-levels, age groups, etiology of amputation, and amputation level (p < 0.005). No ceiling effect was observed (range: 2.5-29/40).

CONCLUSION

This study provides convergent and discriminative validity evidence for Comprehensive High-Level Activity Mobility Predictor use in a more heterogeneous population than previously published, suggesting that clinicians should feel confident to use it as an outcome measure for individuals with amputations who are capable of more than level-ground walking.

CLINICAL RELEVANCE

Clinically, the Comprehensive High-Level Activity Mobility Predictor has validity evidence for use in a more heterogeneous population than originally demonstrated, including civilians, women, people over age 40 years, and non-traumatic etiologies. The Comprehensive High-Level Activity Mobility Predictor may be more useful than standard outcome measures for high-level mobility.

Cross-cultural adaptation and psychometric evaluation of the Yoruba version of the Back beliefs questionnaire among patients with chronic low-back pain

Purpose

To translate, culturally adapt and conduct a psychometric evaluation of the Yoruba version of the Back Beliefs Questionnaire (BBQ) among patients with chronic low-back pain.

Methods

The English version of the BBQ was translated into the Yoruba language through a process of forward-backward translation, reconciliation and harmonization of the reconciled items sequentially. Thereafter, Cronbach’s Alpha, Intra-Class Correlation (ICC), Bland-Altman’s analysis were used to determine the internal consistency, test-retest reliability and limits of agreement of the Yoruba version of the BBQ (BBQ-Y). Other psychometric properties of the BBQ-Y explored comprised acceptability, standard error of measurement (SEM), minimal detectable change (MDC), convergent validity and floor and ceiling effects. While 119 respondents participated in the validity testing, only 51 of them were involved in the reliability testing of the BBQ-Y. Data were analysed using descriptive and inferential statistics. Alpha level was set at p < 0.05.

Results

The mean age of the respondents all the respondents was 56.8 ± 8.5 years. The BBQ-Y had excellent acceptability with a global Cronbach Alpha score of 0.71. The SEM and MDC of the BBQ-Y were 2.3 and 6.4. The BBQ-Y ICC score for test-retest was 0.89, while the Bland-Altman analysis showing limits of agreements for the test-retest reliability were − 6.84 and 5.70. The convergent validity of the BBQ-Y showed a weak correlation (r = 0.273, p = 0.001) with pain intensity using the visual analogue scale.

Conclusion

This is the first study to culturally adapt the BBY-Y and determined its psychometric properties. The BBQ-Y has adequate psychometric properties and it is an appropriate outcome measure for use among Yoruba speaking patients with chronic low-back pain.

Reliability and validation of the Turkish version of the Low Back Outcome Score

OBJECTIVE

This study aimed to validate the Turkish version of the Low Back Outcome Score and check its reliability in patients with chronic low back pain (LBP).

METHODS

Overall, 105 patients (81 women and 24 men; mean age: 49.5 years (18-65 years)) with a complaint of LBP for at least 3 months were included in this study. Test-retest reliability was assessed after 7 days. Overall score of LBOS was compared with the overall scores of "Rolland-Morris Disability Questionnaire," "Oswestry Disability Index," "Quebec Back Pain Disability Scale," "SF-36," and "Bournemouth Questionnaire for Back Pain" to calculate the convergent validity by using Pearson correlation coefficient.

RESULTS

The questionnaire was noted to have high internal consistency. The test-retest analysis revealed an excellent correlation (ICC=0.80). Pearson correlation coefficient of the LBOS was assessed using VAS and had an excellent correlation with all the questionnaires included in this study.

CONCLUSION

The Turkish version of the LBOS questionnaire appeared to be a valid and reliable outcome measure.

LEVEL OF EVIDENCE

Level III, Diagnostic study.

The relationship between clients' motivation and interprofessional teamwork in forensic mental health settings

Client motivation is regarded as a key to preventing violence behavior and positively affecting both patients and treatment staff in forensic psychiatric settings. We examined the correlation between client motivation for medical treatment and the quality of interprofessional teamwork. We surveyed 18 hospitalized forensic psychiatric patients using the IMI-J and CSQ-8J and 18 interprofessional teams from various professions using the r-CPAT, 6 and 12 months after the initial treatment. At 6 months, the correlation coefficients between the total r-CPAT scores and the total IMI-J and CSQ-8J scores were not significant. At 12 months, the correlation coefficients between the total r-CPAT scores and the total IMI-J or CSQ-8J scores were .33 and .11, respectively. The findings indicate that both clients' motivation and the quality of treatment provided by the interprofessional team improved over time. However, this study also showed that the professionals' subjective evaluation of the quality of interprofessional teamwork did not correlate with clients' subjective evaluation of satisfaction. In order to achieve client satisfaction, it is essential for professionals to address clients' needs in a timely manner and to prioritize effective communication to facilitate patient decision-making rather than merely providing advice.

Adaptation and transcultural translation of the Rotator Cuff Quality of Life questionnaire into Spanish

BACKGROUND

The objective of this study was the transcultural adaptation of the Rotator Cuff Quality of Life questionnaire and the determination of the reliability and validity of the questionnaire in the Spanish population with rotator cuff disease. One of the translators was a physiotherapist, and the other was an English philologist.

METHODS

The participants comprised 170 subjects with rotator cuff pathology. Test-retest reliability was established by the intraclass correlation coefficient. Internal consistency was established using the Cronbach α. Convergent validity was established by comparison with the Disabilities of the Arm, Shoulder and Hand questionnaire, Shoulder Pain and Disability Index, Spanish version of the Oxford Shoulder Score, and Spanish version of the Western Ontario Shoulder Instability index using the Spearman correlation coefficient. Estimation of the error in the measurements was calculated with the standard error of measurement. Assessment of reproducibility was performed with 30 minutes between the first and second administrations of the questionnaire.

RESULTS

The Cronbach α was 0.99, showing high internal consistency. The intraclass correlation coefficient was 0.9 (95% confidence interval, 0.99-0.99; P < .001), indicating high test-retest reliability. The Spearman correlation coefficient showed a good relationship in all cases: Disabilities of the Arm, Shoulder and Hand, ρ = 0.9 (P < .001); Oxford Shoulder Score, ρ = 0.7 (P < .001); Shoulder Pain and Disability Index, ρ = 0.8 (P < .001); and Western Ontario Shoulder Instability index, ρ = 0.8 (P < .001). The standard error of measurement indicated little variability in the measurements (2.7%).

CONCLUSIONS

The Spanish version of the Rotator Cuff Quality of Life questionnaire is a valid and reliable instrument for the subjective evaluation of patients with a diagnosis of rotator cuff pathology in the Spanish population.

Responsiveness of the EAT-10 to Clinical Change in Head and Neck Cancer Patients with Dysphagia

Purpose: This retrospective study evaluated the external responsiveness of the Eating Assessment Tool-10 (EAT-10) to clinical changes in a single cohort (n = 105) treated with chemoradiotherapy (CRT) or radiotherapy (RT) for head-and-neck cancer.Method: Patients completed the EAT-10 four times: (I) Within two weeks of commencing (C)RT, (II) in the final week of (C)RT, (III) two weeks post-(C)RT and (IV) following discharge from speech-language pathology services. Data was compared to their oral intake status, using the Functional Oral Intake Scale (FOIS).Result: Using Cohen's d, changes in the EAT-10 and FOIS were comparable, however, a difference was observed at data-point IV. At data-points I, II and III, the EAT-10 had a strong negative correlation with the FOIS (Spearman's ρ= -0.81, -0.80 and -0.81 resp.). At data-point IV the correlation strength decreased (Spearman's ρ= -0.69). Fisher's Z transformation found no statistically significant correlation coefficient differences between data-points I, II and III. A significant difference in correlation was found between these data-points and data-point IV (p = 0.027; p = 0.039 and p = 0.022 resp.). A very high internal consistency was found (Cronbach's α > 0.95) for all data-points.Conclusion: This study's results indicate that the EAT-10 has weaknesses in the external responsiveness and has redundancy of its question items.

Difference between physical therapist estimation and psychological patient-reported outcome measures in patients with low back pain

Minimizing the number of patient-reported outcome measures (PROMs) can reduce patient burden. The primary aim of the present study was to investigate whether physical therapists (PTs) can estimate psychological PROM scores in patients with low back pain (LBP) through physical therapy evaluation. The secondary aims were; 1) to investigate whether the clinical experiences of PTs influence correlations between PT estimates and psychological PROM scores, and 2) to investigate the sensitivity and specificity of PT estimates for the psychological features detected by the PROMs. We recruited hospitalized patients owing to LBP, who underwent evaluation by PTs on the initial day of hospitalization. Patients completed PROMs, including the Pain Catastrophizing Scale (PCS), Tampa Scale for Kinesiophobia, and Hospital Anxiety and Depression Scale immediately before the initial physical therapy session. PTs rated the magnitude of patient kinesiophobia, pain catastrophizing, anxiety, and depression using an 11-point numerical rating scale (NRS; 0 = not detected at all, 10 = very highly detected) through physical therapy evaluation immediately after the initial session. The PTs were blinded to the PROM results. We categorized PTs into two subgroups (PTs with ≥4 years and those with <4 years of clinical experience). Data from 78 patients (mean [SD] age = 60.5 [16.3] years) and 21 PTs were analyzed. A statistically significant but weak correlation (P = .04, Spearman’s ρ = .24) was detected only in the total PCS scores and PT NRS scores in a dataset of all patients and PTs. Further, there were no statistically significant differences in correlations (all P >.05) between the two subgroups of PTs in all measures. Low sensitivity and high specificity of PT estimates for psychological features through physical therapy evaluation were identified in all PROMs when PT NRS scores were categorized into the binary score by 5 (negative: <5; positive: ≥5).

The HPQ-Development and First Administration of a Questionnaire for Hypoparathyroid Patients

Hypoparathyroidism patients suffer a variety of complaints often leading to reduced quality of life. Currently, no specific standard instrument exists to measure corresponding disease manifestations. We therefore aimed to develop a disease-characteristic questionnaire for hypoparathyroid patients. We used an analytical-empirical approach for questionnaire construction based on retrospective analysis of four well-established but non-disease-specific questionnaires (Symptom Checklist 90, revised [SCL-90-R]; Giessen Complaint List [GBB]; Short-Form-36 Health Survey [SF-36]; von Zerssen Symptom List [B-L Zerssen]) and two additional unpublished or local questionnaires (SHGdQ and GPQ) in a German hypoparathyroidism self-help group (n = 60). Retrospective data were compared with corresponding general population norms. The new questionnaire was administered prospectively over 1 year to patients with postoperative hypoparathyroidism and two control groups to validate specificity. Exploratory factor analysis (EFA) and reliability testing were applied to identify relevant scales and reduce overlapping items. In the self-help group, SCL-90-R revealed elevated symptom load in four complaint areas (p = 0.003 to p < 0.001). The SF-36 mental summary score (p < 0.001) and further scales were lowered. In the GBB, four of five scales (p = 0.009 to p < 0.001) were elevated. In the B-L Zerssen, 6 of 24 items revealed complaint areas. Based on these findings, the new 40-item "Hypoparathyroid Patient Questionnaire" (HPQ 40) was developed, tested prospectively, and further analyzed. EFA revealed five scales (pain and cramps, gastrointestinal symptoms, depression and anxiety, neurovegetative symptoms, loss of vitality), all with Cronbach's alpha >0.7. The questionnaire was revised accordingly and shortened to 28 questions to avoid redundancy. We present a new disease-characteristic questionnaire for hypoparathyroidism patients. Prospective testing revealed five major complaint areas and promising psychometric properties. This questionnaire can be tested for usefulness in further clinical trials. © 2019 The Authors. JBMR Plus published by Wiley Periodicals, Inc. on behalf of American Society for Bone and Mineral Research. © 2019 The Authors. JBMR Plus published by Wiley Periodicals, Inc. on behalf of American Society for Bone and Mineral Research.

Cross-cultural adaptation and psychometric evaluation of the Yoruba version of Oswestry disability index

INTRODUCTION

Low-Back Pain (LBP) is a common public health problem that is often worsened by maladaptive beliefs and disability. Thus, necessitating the need for availability of outcome measures to assess these sequelae among patients with chronic LBP. This study aimed to cross-culturally adapt and determine the psychometric properties of the Yoruba version of the ODI (ODI-Y).

METHODS

The ODI-Y was cross-culturally adapted following the process involving forward translation, synthesis, backward translation, expert review, and pilot testing. Internal consistency and test-retest reliability of the ODI-Y were determined using the Cronbach's alpha and intra-class correlation. Other psychometric properties explored included the factor structure, convergent validity, standard error of measurement and the minimal detectable change.

RESULTS

One hundred and thirty-six patients with chronic LBP took part in the validation of the ODI-Y; 86 of these individuals took part in the test-retest reliability (within 1-week interval) of the translated instrument. The mean age of the respondents was 50.5±10.6years. The ODI-Y showed a high internal consistency, with a Cronbach's alpha (α) of 0.81. Test-retest of the Yoruba version of the ODI within 1-week interval yielded an Intra-Class Correlation coefficient of 0.89. The ODI-Y yielded a three-factor structure which accounted for 61.56% of the variance. Correlation of ODI-Y with the visual analogue scale was moderate (r = 0.30; p = 0.001). The standard error of measurement and minimal detectable change of the ODI-Y were 2.0 and 5.5.

CONCLUSIONS

The ODI was adapted into the Yoruba language and proved to have good psychometric properties that replicated the results of other obtainable versions. We recommend it for use among Yoruba speaking patients with LBP.

Reliability and Minimal Detectable Change in the Gait Assessment and Intervention Tool in Patients With Multiple Sclerosis

BACKGROUND

Gait impairment is one of the main causes of disability in people with multiple sclerosis. The Gait Assessment and Intervention Tool is an observational gait scale that assesses kinematic parameters using video recordings.

OBJECTIVE

To study intra- and interrater reliability and the minimal detectable change of the Gait Assessment and Intervention Tool in individuals with multiple sclerosis.

DESIGN

Observational study.

SETTING

Multiple Sclerosis Foundation.

PARTICIPANTS

Thirty-five participants with multiple sclerosis were assessed (12 men, 23 women; 47.7 ± 11 y; Expanded Disability Status Scale = 4.32 ± 1.4).

INTERVENTIONS

Not applicable.

MAIN OUTCOME MEASUREMENTS

Intra- and interrater reliability of the Gait Assessment and Intervention Tool was assessed for each limb using the Intraclass Correlation Coefficient. In addition, the minimal detectable change was calculated.

RESULTS

The Intraclass Correlation Coefficient for the intrarater reliability was found to be excellent for the total score both for the right side (.91; 95% confidence interval 95% CI .85-.95) and the left side (.93; 95% CI .88-.96). The intraclass correlation coefficient for the interrater reliability was .91 (95% CI .85-.95) for the right side, and .93 (95% CI .88-.96) for the left side. The minimal detectable change for the intrarater reliability was 1.19 points for the right side and .77 for the left side.

CONCLUSIONS

The Gait Assessment and Intervention Tool exhibits excellent intra- and interrater reliability and a small minimal detectable change for people with multiple sclerosis.

TBI-CareQOL family disruption: Family disruption in caregivers of persons with TBI

PURPOSE

Family disruption is often an indirect consequence of providing care for a person with traumatic brain injury (TBI). This article describes the development and preliminary validation of a Family Disruption scale designed for inclusion within the TBI-CareQOL measurement system.

METHOD/DESIGN

Five hundred thirty-four caregivers of persons with TBI (service member/veteran n = 316; civilian n = 218) completed the Family Disruption scale, alongside several other measures of caregiver strain and health-related quality of life. Classical test theory and item response theory (IRT)-based analyses were conducted to develop, and establish reliability and validity of, this scale.

RESULTS

Exploratory and confirmatory factor analysis, as well as Samejima's graded response model-related IRT fit analyses, supported the development of a 3-item scale. This final scale is scored on a T score metric (M = 50; SD = 10); higher scores are indicative of more family disruption. Reliability (internal consistency; test-retest stability) was supported for both caregiver groups, and average administration times were under 10 s. Convergent and discriminant validity were supported by strong correlations between Family Disruption and measures of caregiver burden, and smaller correlations with positive aspects of caregiving. As evidence of known-groups validity, caregivers of lower-functioning persons with TBI experienced more family disruption than caregivers of higher functioning individuals.

CONCLUSIONS

The TBI-CareQOL Family Disruption scale is a brief, reliable, and valid assessment of caregiver perceptions of how caring for an individual with a TBI interferes with family life. This measure is well-suited for inclusion in studies seeking to support family functioning in persons with TBI. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Transcultural Adaptation and Psychometric Validation of a European Spanish Language Version of the Falls Behavioral Scale

BACKGROUND AND PURPOSE

The Falls Behavioral Scale (FaB) is considered a valid and reliable tool for measuring fall risk factors related to behavior among older people. It was originally developed and validated in Australia by Clemson et al. The purpose of this study was to perform a transcultural adaptation and validation of the FaB to European Spanish.

METHODS

The transcultural adaptation of the questionnaire followed the methodology structured and validated by Beaton et al. The prefinal version in European Spanish was tested in a pilot study utilizing 15 participants. A total of 167 participants older than 60 years and capable of walking independently, with or without gait assistive devices, were recruited for the study. Internal consistency and reliability were analyzed using Cronbach α and the intraclass correlation coefficient (ICC) with a 95% confidence interval. Convergent validity was assessed using Spearman's coefficient, and correlations were evaluated with the European Spanish versions of the EuroQoL-5D (EQ-5D) and the Activities-Specific Balance Confidence Scale (ABC-16).

RESULTS

Good internal consistency was obtained (α = .714) as was test-retest reliability of the overall questionnaire (ICC = 0.97). For each item, good test-retest reliability was achieved, obtaining values for ICC ranging between 0.63 and 0.91 (P < 0.001). Floor and ceiling effects in the European Spanish FaB were not found. Moderate convergent validity was shown, demonstrated by statistically significant associations between the European Spanish version of the FaB and both the ABC-16 (rS = -0.512, P < .001) and the health status subjective value of the EuroQoL-5D scale, also in its European Spanish version (rS = -300, P < .001). Minimum detectable change (MDC) was calculated to provide confidence that any changes are not the result of a random variation or a measuring error (6.49 points; 9.28% MDC).

CONCLUSION

The European Spanish FaB was shown to be a valid and reliable tool for use with Spanish-speaking seniors.

Development and psychometric testing of an instrument to assess psychosocial determinants of sleep hygiene practice

This study examined the psychometric properties of a newly developed instrument to assess psychosocial determinants of sleep hygiene. Baseline data (n = 160) from an m-health physical activity and sleep intervention were analyzed to examine scale validity. Additional participants (n = 20) were recruited to compute test-retest reliability. Four of seven constructs correlated significantly with sleep hygiene practice (r = -0.17 to -0.36). The scales generally displayed unidimensional component structures. Internal consistency was good to excellent (α = 0.76-0.92). Test-retest reliability was good to excellent (ICC = 0.61-0.84). Though satisfactory, these findings warrant replication in larger samples.

Comparison of measurement properties of three shortened versions of the balance evaluation system test (BESTest) in people with subacute stroke

OBJECTIVES

To examine the reliability, validity and responsiveness of 3 different short versions of the Balance Evaluation Systems Test (BESTest: S--BESTest, Brief-BESTest and Mini-BESTest) in patients with subacute stroke.

DESIGN

A prospective cohort study.

PARTICIPANTS

Patients with subacute stroke.

METHODS

Patients were assessed using the full BESTest. Scores of 3 short-form BESTests were later extracted. The intra-rater and inter-rater reliability (n = 12) were gathered from 5 raters. Concurrent validity was assessed with the Berg Balance Scale (BBS). Floor/ceiling effect, internal responsiveness and external responsiveness with the BBS (n = 70) were assessed at baseline, 2 weeks and 4 weeks post-rehabilitation.

RESULTS AND CONCLUSION

All short-form BESTests demonstrated excellent intra-rater and inter-rater reliability (intraclass correlation coefficient (ICC) = 0.95-0.99) and excellent concurrent validity (r = 0.93-0.96). Unlike the Brief-BESTest and Mini-BESTest, the S-BESTest and BESTest had no significant floor/ceiling effects (< 20%). The standardized response mean of all 4 BESTest versions were large, ranging between 1.19 and 1.57, indicating sufficient internal responsiveness. The area under the curve of the S-BESTest and BESTest were significantly higher than the Brief-BESTest and Mini-BESTest, reflecting better accuracy of the S-BESTest and BESTest in identifying patients with subacute stroke who had balance improvement using the minimal clinically important difference of 6 and 16 points, respectively. These findings suggest that the S-BESTest is a short-form BESTest that is appropriate for assessing balance impairments in patients with subacute stroke.

Measuring Productivity Costs in Patients With Musculoskeletal Disorders: Measurement Properties of the Institute for Medical Technology Assessment Productivity Cost Questionnaire

BACKGROUND

The Institute for Medical Technology Assessment Productivity Cost Questionnaire (iPCQ) was recently developed to cover all domains of productivity costs; absenteeism, presenteeism and productivity costs related to unpaid work. The original iPCQ has not been tested with respect to neither content or construct validity, nor reliability, and there is no Norwegian version of the questionnaire.

OBJECTIVES

To translate and cross-culturally adapt the iPCQ into Norwegian and to test its measurement properties among patients with musculoskeletal disorders.

METHODS

Translation and cross-cultural adaptation was conducted according to guidelines, and measurement properties were investigated using a cross-sectional design including a test-retest assessment. Patients with musculoskeletal disorders were recruited from secondary care. Data quality, content validity (10 patients evaluated comprehensibility, 2 researchers and 1 clinician evaluated relevance and comprehensiveness), construct validity (factor analysis, internal consistency, divergent hypothesis testing), and test-retest reliability (intraclass correlation coefficient two-way random average agreement, Cohen's unweighted kappa) were assessed.

RESULTS

In total, 115 patients with a mean age (SD) of 46 (9) years were included, and 62 responded to the retest. The questionnaire was feasible, with little missing data and no floor or ceiling effects. Content validity displayed good comprehensibility and relevance and sufficient comprehensiveness. Factor analysis revealed a 3-component solution accounting for 82% of the total variance; items loaded as expected and supported the original structure of the iPCQ. Internal consistency was acceptable for the 3 components of productivity cost, with an inter-item correlation ranging from 0.42 to 0.62. Further, a total of 91% of our hypotheses were verified. The intraclass correlation coefficient values ranged from 0.88 to 0.99 for all items except one; kappa ranged from 0.61 to 0.92, indicating overall good reliability of the questionnaire.

CONCLUSIONS

The Norwegian iPCQ showed good measurement properties among patients with musculoskeletal disorders from secondary care in Norway. We therefore recommend the iPCQ as a useful tool for measuring productivity costs in patients with musculoskeletal disorders.

Reliability, Validity, and Responsiveness of the Mini-Balance Evaluation Systems Test in Ambulatory Individuals with Multiple Sclerosis

Purpose: The purpose of this study was to determine the reliability, validity, and responsiveness of the Mini-Balance Evaluation Systems Test (MBT) in persons with multiple sclerosis (pwMS). Method: A total of 32 pwMS completed a questionnaire on disease severity, the Activities-specific Balance Confidence Scale (ABC), and the MBT. The MBT was re-administered 1 week later. Results: The interrater and test-retest reliability of the total MBT and subscales were excellent. The standard error of measurement for the total MBT, calculated from test-retest and interrater reliability, respectively, was 1.32 and 1.07. The minimal detectable change (MDC) for the total MBT was 3.74; the MDC for the subscales ranged from 0.98 (sensory) to 2.38 (gait). The correlations between individual subscale scores and the total MBT, among subscales, and between the total MBT and disease severity and ABC were excellent. Correlations between the total MBT and age, MS type, and fall and imbalance histories were moderate. Disease severity and ABC scores were the strongest predictors of MBT score. No floor effects were found. Ceiling effects were found for two subscales, but not for the total MBT. Conclusions: The MBT is reliable and valid in pwMS. MDC values will facilitate assessing the effectiveness of treatment. Because ceiling effects were found for two subscales, but not the total MBT, it is recommended that clinicians administer the MBT in its entirety.

Back beliefs among elderly seeking health care due to back pain; psychometric properties of the Norwegian version of the back beliefs questionnaire

BACKGROUND

The Back Beliefs Questionnaire (BBQ) is a 14-item patient-reported questionnaire that measures attitudes and beliefs about the consequences of back pain. The BBQ has recently been translated into Norwegian, but its psychometric properties have not yet been tested. The aim of this study is to evaluate the reliability and construct validity of the BBQ when used on elderly patients with back pain.

METHOD

A prospective cohort study with a test-retest design among 116 elderly patients (> 55 years of age) seeking primary care for a new episode of back pain. Test-retest, standard error of measurement (SEM), minimal detectable change (MDC), internal consistency and construct validity by a priori hypotheses (Spearman's- and Pearson correlation coefficient) were tested.

RESULTS

A total of 116 patients, mean age (SD) 67.7 (8.3), were included and 63 patients responded to the test-retest assessment. The mean (SD) BBQ sum scores (range 9-45) were 29.8 (7.0) and 29.2 (6.7) for the test and retest respectively. The test-retest was acceptable with an intraclass correlation coefficient of 0.71 (95% CI, 0.54-0.82), SEM was 3.8 and MDC 10.5. Internal consistency with Cronbach's alpha was good (0.82) and acceptable construct validity was supported by the confirmation of 75% of the a priori hypotheses.

CONCLUSION

The Norwegian version of the BBQ demonstrated acceptable test-retest reliability and good construct validity and can be used to assess pessimistic beliefs in elderly patients with back pain.

Cross-cultural adaptation, test-retest reliability, and construct validity of the Thai version of the University of Washington Pain-Related Self-Efficacy Scale

INTRODUCTION

One psychosocial factor in the biopsychosocial model is pain-related self-efficacy, which has been shown to be a strong predictor of response to pain treatment.

OBJECTIVES

To cross-culturally adapt the University of Washington Pain-Related Self-Efficacy Scale (UW-PRSE6) into Thai and evaluate its psychometric properties.

METHODS

The study was approved by the Chulalongkorn University Human Ethics Committee (COA No. 156/2018). The original UW-PRSE6 was cross-culturally adapted using the Functional Assessment of Chronic Illness Therapy translation methodology. Two hundred forty-one individuals with chronic low back pain completed the Thai version of UW-PRSE6 (T-UW-PRSE6), Thai Fear Avoidance Beliefs Questionnaire (T-FABQ), and Thai Medical Outcome Study Short-Form 36 (T-SF-36). A subset of 152 participants completed the T-UW-PRSE6 again after a 7-day interval. Cronbach's alpha and intraclass correlation coefficients were calculated to estimate internal consistency and test-retest reliability, respectively. The construct validity of the T-UW-PRSE6 was evaluated by computing Spearman correlation coefficients between the T-UW-PRSE6 score and the measures of the validity criterion variables.

RESULTS

The T-UW-PRSE6 had good internal consistency (Cronbach's alpha = 0.85) and moderate test-retest reliability (intraclass correlation coefficient [2,1] = 0.72). The T-UW-PRSE6 was negatively correlated with the T-FABQ Work and Physical Activity subscales (rs = -0.34 and -0.34, respectively) and positively correlated with the General Health, Physical Functioning, Role Physical, Role Emotional, Social Functioning, Bodily Pain, Vitality, and Mental Health scales of the T-SF-36 (rs = 0.38, 0.42, 0.54, 0.51, 0.47, 0.54, 0.41, and 0.40, respectively).

CONCLUSION

The T-UW-PRSE6 demonstrated acceptable psychometric properties for assessing pain-related self-efficacy in individuals with chronic low back pain, making available a measure for facilitating future cross-cultural research on pain self-efficacy.

Five times sit-to-stand test for ambulatory individuals with spinal cord injury: a psychometric study on the effects of arm placements

STUDY DESIGN

A psychometric study.

OBJECTIVES

To investigate the reliability and the concurrent validity of the five times sit-to-stand test (FTSST) during various arm placement conditions in ambulatory participants with spinal cord injury (SCI). In addition, the difficulty of the FTSST during various arm placement conditions was compared using the number, characteristics, and physical ability of those who could complete the conditions.

SETTING

Rehabilitation centers and communities in Thailand.

METHODS

Eighty-two participants were assessed for their physical ability and ability to complete the FTSST in four arm placement conditions, namely, arms on a walking device, arms on knees, arms free by sides, and arms crossed over the chest, according to their ability and in random order.

RESULTS

The outcomes for all the FTSST conditions had excellent rater and test-retest reliability with a modest to strong correlation with their physical ability (ρ = -0.39 to -0.72), and it is especially high for the condition with arms by sides. All participants could complete the conditions with arms on a walking device, and two-thirds of them could execute the other conditions. The physical ability of these individuals was significantly better, with the number of those with mild lesion severity being greater than those who could execute the FTSST with arms on a walking device (p <0.01).

CONCLUSIONS

Arm placements affected the psychometric properties and the ability to complete the FTSST of the participants. The current findings recommend the FTSST for ambulatory individuals with SCI using arms free by sides.

The reliability and validity of the Timed Up and Go as a clinical tool in individuals with and without disabilities across a lifespan: a systematic review

PURPOSE

To summarize the available literature related to reliability and validity of the Timed Up and Go in typical adults and children, and individuals diagnosed with the following pathologies: Huntington's disease, stroke, multiple sclerosis, Parkinson's disease, spinal cord injury, Down syndrome, or cerebral palsy.

MATERIALS AND METHODS

A search was conducted using MeSH terms and keywords through a variety of databases. Data regarding reliability and validity were synthesized.

RESULTS

This review included 77 articles. Results were variable depending on the studied population. The Timed Up and Go showed excellent reliability in typical adults, in individuals with cerebral palsy, in individuals with multiple sclerosis, in individuals with Huntington's disease, individuals with a stroke, and individuals with a spinal cord injury. The TUG demonstrated strong concurrent validity for individuals with stroke and spinal cord injury. Predictive validity data was limited.

CONCLUSIONS

Based on the literature assessed, the Timed Up and Go is clinically applicable and reliable across multiple populations. The Timed Up and Go has a wide variety of clinical use making it a diverse measure that should be considered when choosing an outcome an activity based outcome measure. However, there are some limitations in the validity of the utilization of the Timed Up and Go to some populations due to a lack of data and/or poor choice of comparison outcome measures when assessing validity. Additional research is needed for young to middle aged adults.IMPLICATIONS FOR REHABILITATIONOutcome measures are a vital component of clinical practice across all populations.The Timed Up and Go is a highly studied outcome measure in the geriatric population, but lacks research of its applicability to other populations.This study was able to highlight the clinical utility of the Timed Up and Go in populations that under utilize this outcome measure.

Translation, cultural adaptation, validation, and reliability study of the Quick-EBP-VIK instrument: Chinese version

RATIONALE, AIMS, AND OBJECTIVES

Valid and reliable instruments for measuring are needed. To add knowledge to the subject of tools of evidence-based practice (EBP) evaluation in mainland China, the present study aims to translate the Quick-EBP-VIK into Chinese, which is an instrument for the assessment of nurses' value, knowledge, and implementation of EBP, and to evaluate the metric characteristics of the Chinese version.

METHODS

In this methodological study, a total sample of 402 nurses from mainland China was applied. Construct validity was evaluated by using factor analysis and further supported through known-group validity. A panel of experts examined the content validity. Internal consistency was determined using composite reliability and Cronbach alpha. The intraclass correlation coefficient (ICC) was calculated to assess test-retest reliability.

RESULTS

The exploratory factor analysis revealed a three-factor structure model same to the original instrument. The confirmatory factor analysis showed a good fit model with a comparative fit index of 0.957 and a root mean square error of approximation of 0.065. Significant differences were found in the item means of the tool between nurses who received EBP training and those who had not, which supported the known-group validity. The Cronbach alpha and composite reliability for the three subscales were all higher than 0.70. The ICC ranged from 0.569 to 0.928 for the three subscales and from 0.494 to 0.903 for the items included in the instrument.

CONCLUSION

The Chinese version of the Quick-EBP-VIK has evidence of acceptable reliability and validity and can be used to measure value, knowledge, and implementation of EBP for Chinese nurses.

Diagnostic accuracy and feasibility of depression screening in spinal cord injury: A systematic review

Context: Individuals with spinal cord injury or disease (SCI/D) are at increased risk of depression, which is associated with poor short- and long-term outcomes. Accurate diagnosis is complicated by overlapping symptoms of both conditions, and a lack of consensus-derived guidelines specifying an appropriate depression screening tool. Objective: To conduct a systematic review to: (1) identify the diagnostic accuracy of established depression screening tools compared to clinical assessment; and, (2) to summarize factors that influence feasibility of clinical implementation among adults with SCI/D. Methods: A systematic search using MEDLINE, EMBASE, PsycINFO, CINAHL and the Cochrane databases using the terms spinal cord injury, depression or mood disorder, and screening or diagnosis identified 1254 initial results. Following duplicate screening, five articles assessing eight screening tools met the final inclusion and exclusion criteria. Measures of diagnostic accuracy and feasibility of implementation were extracted. The Quality Assessment Tool for Diagnostic Accuracy Studies 2 (QUADAS-2) was used to assess study quality. Results: The Patient Health Questionnaire-9 (PHQ-9) had the highest sensitivity (100%), and specificity (84%). The 2-item version, the PHQ-2, comprised the fewest questions, and six of the eight tools were available without cost. Utilizing the QUADAS-2 tool, risk of bias was rated as low or unclear risk for all studies; applicability of the results was rated as low concern. Conclusion: The PHQ-9 is an accurate and feasible tool for depression screening in the adult SCI/D population. Future studies should evaluate the implementation of screening tools and the impact of screening on access to mental health interventions.

Validation of the Pittsburgh Fatigability Scale in a mixed sample of adults with and without chronic conditions

The aim of this study was to validate the Pittsburgh Fatigability Scale in three different groups: adults with multiple sclerosis (n = 65), fibromyalgia (n = 64), and healthy adults (n = 86). Participants completed the Pittsburgh Fatigability Scale and other self-report measures. While findings supported the internal consistency of the Pittsburgh Fatigability Scale (all Cronbach's alpha ⩾ 0.85), standard error of measurement estimates were larger than hypothesized. In addition, while item-level reliability was generally supported, item-total correlations for two items were lower than expected. Convergent and discriminant validity were supported, and the Pittsburgh Fatigability Scale was able to distinguish between individuals with and without chronic disease. Overall, the Pittsburgh Fatigability Scale exhibited acceptable psychometric properties.

A Core Set of Outcome Measures for Adults With Neurologic Conditions Undergoing Rehabilitation: A CLINICAL PRACTICE GUIDELINE

Supplemental Digital Content is Available in the Text.

Background:

Use of outcome measures (OMs) in adult neurologic physical therapy is essential for monitoring changes in a patient's status over time, quantifying observations and patient-reported function, enhancing communication, and increasing the efficiency of patient care. OMs also provide a mechanism to compare patient and organizational outcomes, examine intervention effectiveness, and generate new knowledge. This clinical practice guideline (CPG) examined the literature related to OMs of balance, gait, transfers, and patient-stated goals to identify a core set of OMs for use across adults with neurologic conditions and practice settings.

Methods:

To determine the scope of this CPG, surveys were conducted to assess the needs and priorities of consumers and physical therapists. OMs were identified through recommendations of the Academy of Neurologic Physical Therapy's Evidence Database to Guide Effectiveness task forces. A systematic review of the literature on the OMs was conducted and additional OMs were identified; the literature search was repeated on these measures. Articles meeting the inclusion criteria were critically appraised by 2 reviewers using a modified version of the COnsensus-based Standards for the selection of health Measurement INstruments. (COSMIN) checklist. Methodological quality and the strength of statistical results were determined. To be recommended for the core set, the OMs needed to demonstrate excellent psychometric properties in high-quality studies across neurologic conditions.

Results/Discussion:

Based on survey results, the CPG focuses on OMs that have acceptable clinical utility and can be used to assess change over time in a patient's balance, gait, transfers, and patient-stated goals. Strong, level I evidence supports the use of the Berg Balance Scale to assess changes in static and dynamic sitting and standing balance and the Activities-specific Balance Confidence Scale to assess changes in balance confidence. Strong to moderate evidence supports the use of the Functional Gait Assessment to assess changes in dynamic balance while walking, the 10 meter Walk Test to assess changes in gait speed, and the 6-Minute Walk Test to assess changes in walking distance. Best practice evidence supports the use of the 5 Times Sit-to-Stand to assess sit to standing transfers. Evidence was insufficient to support use of a specific OM to assess patient-stated goals across adult neurologic conditions. Physical therapists should discuss the OM results with patients and collaboratively decide how the results should inform the plan of care.

Disclaimer:

The recommendations included in this CPG are intended as a guide for clinicians, patients, educators, and researchers to improve rehabilitation care and its impact on adults with neurologic conditions. The contents of this CPG were developed with support from the APTA and the Academy of Neurologic Physical Therapy (ANPT). The Guideline Development Group (GDG) used a rigorous review process and was able to freely express its findings and recommendations without influence from the APTA or the ANPT. The authors declare no competing interest.

Video Abstract available for more insights from the authors (see Video, Supplemental Digital Content 1, available at: http://links.lww.com/JNPT/A214.

Validation of a robot serious game assessment protocol for upper limb motor impairment in children with cerebral palsy

BACKGROUND

The ROBiGAME project aims to implement serious games on robots to rehabilitate upper limb (UL) motor function in children with cerebral palsy (CP). Serious game characteristics (target position, level of assistance/resistance, level of force) are typically adapted based on the child's assessment before and continuously during the game (measuring UL working area, kinematics and muscle strength).

OBJECTIVE

This study developed an UL robotic motor assessment protocol to configure the serious game.

METHODS

Forty-nine healthy children and 20 CP children participated in the study. The clinical assessment consisted of the child's UL length and isometric force. The robot assessment consisted of the child's UL working area (WA), the UL isometric and isokinetic force in three directions and the UL kinematics during a pointing task toward targets placed at different distances.

RESULTS

Results showed that WA and UL isometric force were moderately to highly correlated with clinical measures. Ratios between the UL isokinetic force generated on three directions were established. The velocity and straightness indexes of all children increased when they had to reach to targets placed more distant.

CONCLUSIONS

This protocol can be integrated into different serious games in order to continuously configure the game characteristics to a child's performance.

TRIAL REGISTRATION

The study was registered at ClinicalTrials.gov (NCT02543424), 12 August 2015.

Reliability and validity of the Turkish version of the Lower Extremity Functional Scale in patients with different lower limb musculoskeletal dysfunctions

Background/Aims

Lower extremity functional scales in Turkish are limited in number and generalisability. The aims of this study were to translate the Lower Extremity Functional Scale into Turkish, and to investigate its reliability and validity in patients with different musculoskeletal conditions in their lower extremities.

Methods

The Turkish Lower Extremity Functional Scale, Visual Analogue Scale and Timed Up and Go test were administered in 256 outpatients with a re-test after 24–48 hours. Internal consistency, test–retest reliability, construct validity, factor structure and floor-ceiling effects were investigated.

Findings

The Scale has good reliability and validity. The Spearman correlation coefficient was 0.91 and intraclass correlation coefficient was 0.923. The standard error of measurement value was 4.015 and internal consistency coefficient was 0.92. Item-total correlation values were 0.46–0.74. It had a 3-factor structure, explaining 58.51% of the total variance and the eigenvalues were 1.04–8.26. It had no floor and ceiling effects, and was negatively correlated with the Visual Analogue Scale and Timed Up and Go test (P=0.000).

Conclusions

The Turkish Lower Extremity Functional Scale is a reliable and valid tool to be used in participants with lower extremity musculoskeletal dysfunctions. Evaluation of its responsiveness and minimal clinically important difference in future studies would have a great value.

Psychometric Properties of the Hindi Version of the Fear-Avoidance Beliefs Questionnaire in Patients With Chronic Non-Specific Low Back Pain

STUDY DESIGN

Prospective cohort study.

OBJECTIVE

To translate, adapt, and establish psychometric properties of the Fear-Avoidance Beliefs Questionnaire (FABQ) for Hindi-speaking patients with chronic non-specific low back pain.

SUMMARY OF BACKGROUND DATA

The FABQ is a patient-reported measure to assess beliefs regarding how physical activity and work are influenced based on fear related to low back pain.

METHODS

Standardized translation guidelines were implemented to confirm Hindi-version of the FABQ (FABQ-H). A cross-sectional study design was utilized. Construct validity analysis included factor analysis of the FABQ and use of Pearson correlation coefficients to report convergent and divergent validity. Reliability assessment included calculation of intraclass correlation coefficient (ICC) and Cronbach α for internal consistency. Outcome measures consisted of Numeric Rating Scale (NRS), Roland Morris Disability Questionnaire (RMDQ) Hindi, and Tampa Scale of Kinesiophobia (TSK).

RESULTS

In total, 100 patients with chronic non-specific low back pain were recruited, with a mean age of 36.89 (±7.78). Factor analysis revealed a three-factor structure of the FABQ, which consisted of subscales FABQ Physical activity, FABQ Work, and FABQ Work prognosis. Convergent validity analysis demonstrated a moderate correlation between FABQ-H and TSK (r = 0.413). Divergent validity analysis displayed a moderate correlation between FABQ-H and NRS (r = 0.362) and RMDQ Hindi (r = 0.399). ICC value for the FABQ-H was observed as 0.938 indicating high significance for test-retest reliability. Cronbach α for the FABQ-H was recorded as 0.806 demonstrating high internal consistency.

CONCLUSION

A successful translation and adaptation of the Hindi version of FABQ is reported in this study. The three-factored FABQ-H exhibited satisfactory construct validity, test-retest reliability, and internal consistency. Based on findings of this study, the FABQ-H can be implemented in Hindi-speaking patients with chronic non-specific low back pain (LBP).

LEVEL OF EVIDENCE

3.

The relationship between balance ability and walking ability using the Berg Balance Scale in people with transfemoral amputation

BACKGROUND

Few reports have examined the relationship between balance ability and walking ability in people with transfemoral amputation using the Berg Balance Scale.

OBJECTIVES

To assess the construct validity (known groups discrimination, convergent validity, and floor/ceiling effects) of Berg Balance Scale for people with transfemoral amputation.

STUDY DESIGN

Cross-sectional study.

METHODS

Thirty people with transfemoral amputation participated (age: 54 ± 19 years; range: 18-78 years). Outcome measures (Berg Balance Scale, Timed Up & Go test, Six-Minute Walk Test, and use of ambulatory aids) were compared between the groups requiring and not requiring ambulatory aids by the Mann-Whitney U test, Student's t-test or Welch's t-test. Correlations were assessed using Spearman's rank correlation coefficients and age-corrected Spearman's partial rank correlation coefficients.

RESULTS

The group using ambulatory aids had a significantly lower Berg Balance Scale score (41 ± 5 vs 52 ± 3). Berg Balance Scale score was correlated with Timed Up & Go test, use of aids, and Six-Minute Walk Test using Spearman's rank correlation coefficients (r =-0.85, p < 0.0001; r =-0.82, p < 0.0001; r = 0.81, p < 0.0001) and age-corrected partial rank correlation coefficients (r =-0.66, p < 0.0001; r =-0.56, p = 0.0017; r = 0.57, p = 0.0012). No ceiling effect of Berg Balance Scale was observed.

CONCLUSIONS

Balance ability in people with transfemoral amputation could be evaluated using Berg Balance Scale and is correlated with walking ability.

CLINICAL RELEVANCE

In clinical practice, using Berg Balance Scale for people with transfemoral amputation may adequately enable us to discriminate different groups based on walking ability from the perspective of balance ability. When walking ability is evaluated as low, the improvement of walking ability may be evaluated by Berg Balance Scale improvement during rehabilitation.

Neonatal Eating Assessment Tool - Mixed Breastfeeding and Bottle-Feeding (NeoEAT - Mixed Feeding): factor analysis and psychometric properties

BACKGROUND

Early identification of feeding difficulty in infancy is critical to supporting breastfeeding and ensuring optimal nutrition for brain development. The Neonatal Eating Assessment Tool (NeoEAT) is a parent-report assessment that currently has two versions: NeoEAT - Breastfeeding and NeoEAT - Bottle-feeding for use in breast and bottle-fed infants, respectively. There are currently no valid and reliable parent-report measures to assess feeding through a combination of both breast and bottle delivery. The purpose of this study was to conduct a factor analysis and test the psychometric properties of a new measure, the NeoEAT - Mixed Breastfeeding and Bottle-Feeding (NeoEAT - Mixed Feeding), including internal consistency reliability, test-retest reliability, construct validity and known-groups validity.

METHODS

Parents of infants younger than 7 months who had fed by both bottle and breast in the previous 7 days were invited to participate. Internal consistency reliability was tested using Cronbach's α. Test-retest reliability was tested between scores on the NeoEAT - Mixed Feeding completed 2 weeks apart. Construct validity was tested using correlations between the NeoEAT - Mixed-Feeding, the Infant Gastroesophageal Reflux Questionnaire - Revised (I-GERQ-R), and the Infant Gastrointestinal Symptoms Questionnaire (IGSQ). Known-groups validation was tested between healthy infants and infants with feeding problems.

RESULTS

A total of 608 parents participated. Exploratory factor analysis revealed a 68-item scale with 5 sub-scales. Internal consistency reliability (Cronbach's α = .88) and test-retest reliability (r = 0.91; p < .001) were both acceptable. Construct validity was demonstrated through correlations with the I-GERQ-R (r = 0.57; p < .001) and IGSQ (r = 0.5; p < .001). Infants with feeding problems scored significantly higher on the NeoEAT - Mixed Feeding, indicating more problematic feeding symptoms, than infants without feeding problems (p < .001), supporting known-groups validity.

CONCLUSIONS

The NeoEAT - Mixed Feeding is a 68-item parent-reported measure of breast- and bottle-feeding behavior for infants less than 7 months old that now has evidence of validity and reliability for use in clinical practice and research. The NeoEAT - Mixed Feeding can be used to identify infants with problematic feeding, guide referral decisions, and evaluate response to interventions.

Translation, cultural adaptation, and psychometric testing of the Yoruba version of Fear-Avoidance Beliefs Questionnaire in patients with low-back pain

PURPOSE

To translate, culturally adapt, and validate the Fear-Avoidance Beliefs Questionnaire into Yoruba language.

MATERIALS AND METHODS

Translation and cultural adaptation of the Yoruba version of the Fear-Avoidance Beliefs Questionnaire was carried out following the Guillemin criteria. One hundred and thirty-one individuals with chronic low-back pain participated in the psychometric evaluation of the Yoruba language translation. Cronbach's alpha (α), principal component analysis, intra-class correlation, Bland-Altman analysis, Spearman rank correlation coefficient, and minimal detectable difference were used for the analysis. Alpha level was set at p < 0.05.

RESULTS AND CONCLUSION

The mean age of the respondents was 53.6 ± 11.6 years. The internal consistency of the Yoruba language version of the Fear Avoidance Beliefs Questionnaire yielded a Cronbach's alpha of 0.9. Principal component analysis yielded a three-factor structure including the "work", "beliefs related to work", and "physical activity" which accounted for 61.6% of variance in the Yoruba translation. Test-retest reliability of the Yoruba translation yielded an Intra class correlation coefficient 0.97 (0.95-0.98). The Yoruba Fear Avoidance Beliefs Questionnaire was poorly correlated with the Visual Analog Scale (r = 0.01) and Roland-Morris Disability Questionnaire (r = 0.3). The minimal detectable difference of the Yoruba translation was 7.0. The Yoruba Fear Avoidance Beliefs Questionnaire demonstrated excellent psychometric properties similar to existing versions and is appropriate for clinical use among Yoruba-speaking patients.IMPLICATIONS FOR REHABILITATIONThe Fear-Avoidance Beliefs Questionnaire is a culturally sensitive psychosocial outcome measure, necessitating its existence, and adaptation into different languages.The instrument was translated and culturally adapted into the Yoruba language following the Guillemin criteria.The Yoruba translation demonstrated excellent internal consistency, test-retest reliability and weak correlations with the Visual analog scale and Roland-Morris Disability Scale.The Yoruba version of the Fear-Avoidance Beliefs Questionnaire can be used to assess fear-avoidance beliefs among Yoruba speaking patients with low-back pain.

Reliability and validity of the Turkish version of the WHO-5, in adults and older adults for its use in primary care settings

Background:

This study aims to determine the psychometric properties of the World Health Organization Well-Being Index (WHO-5) Turkish version in Turkish adults and older adults.

Methods:

This is a multicenter cultural adaptation study carried out with 1752 participants. Internal consistency (by Cronbach’s alpha); Construct validity (by known groups and confirmatory factor analysis-CFI) and discriminant validity are evaluated stratified by adults and older adults. Cohen’s Effect Size is used in known groups and discriminant validity analyses.

Results:

Distribution properties of the WHO-5 Turkish version are in acceptable limits. Alpha values are 0.81 for adults and 0.86 for older adults. The variances of the 58.5% of the adults sample and 63.9% of the older adults sample are explained in Exploratory FA. Model fits (CFI) are satisfactory ( > 0.95) in both samples; but RMSEA is poor in the older adults sample (0.166) whereas it is acceptable (0.073) in the adults sample. Known groups validity and discriminant analyses are satisfactory in both adults and older adults.

Conclusion:

The WHO-5 Turkish version has a good measurement capacity, internal consistency and good model fits in both samples. The error values in the older adults group suggest that the results when testing older adults should be interpreted with caution.

Prospective Blinded Evaluation of Patient-Physician Agreement Using the Summary Outcome Determination (SOD) Score

OBJECTIVE

To determine whether the Summary Outcome Determination (SOD) score demonstrates a high level of physician-patient agreement in a prospective setting with multiple raters.

PATIENTS AND METHODS

For this study, 100 patients who were being evaluated at various intervals following shoulder or elbow surgery were prospectively enrolled from May 30, 2017, through August 31, 2017. The patients' attending physicians and a member of their team (physician assistant, resident, fellow, medical student) assigned categorical and numerical SOD scores while blinded to the scores given by each other. All scores were analyzed among raters, assessing internal consistencies, agreement, and reliability.

RESULTS

The mean follow-up (interval between surgery and completion of the survey) was 31 months, with a range of 1 to 220 months. The intraclass correlation coefficient for patient and physician numerical scores was excellent at 0.82. The weighted κ value for categorical scores was 0.64. Bland-Altman analysis revealed low average discrepancy at 0.6 with a 95% CI of -3.3 to 4.5. The Cronbach α value was 0.94, indicating strong internal validity. The categorical physician-patient agreement occurred within one category 96% of the time.

CONCLUSION

This study found that the SOD score has strong agreement with excellent intraclass correlation coefficient and weighted κ values, indicating substantial agreement, reproducibility (shown by low average error), and strong internal validity. With promising results in the prospective setting, the SOD score was found to be an easy to use outcome measure with reliable agreement between patient and physician. This score has potential to be a metric revealing the "value" of a specific surgical intervention.

Cross cultural adaptation, reliability and construct validity of the Boston Carpal Tunnel Questionnaire in standard Arabic language

PURPOSE

To perform cross cultural adaptation of Boston Carpal Tunnel Questionnaire in standard Arabic language and assess the reliability and construct validity of the new tool.

MATERIALS AND METHODS

Cross cultural adaptation was performed according to guidelines. One hundred and one Arabic patients with carpal tunnel syndrome agreed to participate in the study and filled the questionnaire. Cronbach's alpha was calculated to assess internal consistency. Test-retest reliability was assessed after two weeks by calculating Intraclass correlation coefficient. To assess construct validity; Spearman correlation coefficient with the Disabilities of the Arm, Shoulder and Hand Questionnaire was calculated.

RESULTS

Arabic Boston Carpal Tunnel Questionnaire version had excellent internal consistency, Cronbach's Alpha was 0.877 for Symptoms Severity Scale and 0.895 for Functional Status Scale. Test-retest reliability was excellent (Interclass Correlation Coefficient was 0.899 for Symptoms Severity Scale and 0.944 for Functional Status Scale). Correlation with the Disabilities of the Arm, Shoulder and Hand Questionnaire was high which reflects excellent construct validity. All results were similar to the results of previous studies.

CONCLUSIONS

Arabic Boston Carpal Tunnel Questionnaire was produced. The tool demonstrated excellent internal consistency, test-retest reliability and construct validity. The questionnaire is suitable for use with carpal tunnel syndrome patients in the Middle East and North Africa region. Implications for rehabilitation Carpal tunnel syndrome is the most common peripheral neuropathy worldwide with many affected in Arabic speaking countries. Specific outcome measures like Boston Carpal Tunnel Questionnaire are important in evaluating the impact of different interventions on patients' wellbeing. The Arabic Boston carpal tunnel questionnaire is a valid and reliable tool to use with Arabic speaking people with Carpal Tunnel Syndrome.

End-of-life measures in Huntington disease: HDQLIFE Meaning and Purpose, Concern with Death and Dying, and End of Life Planning

BACKGROUND AND PURPOSE

Huntington disease (HD) is a progressive neurodegenerative disorder. There are no HD-specific measures to assess for end-of-life (EOL) preferences that have been validated for clinical use. The purpose of this study is to demonstrate reliability and validity of three HD-specific EOL measures for use in and clinical research settings.

METHODS

We examined internal reliability, test-retest reliability, floor and ceiling effects, convergent and discriminant validity, known groups' validity, measurement error, and change over time to systematically examine reliability and validity of the HDQLIFE EOL measures.

RESULTS

Internal consistency and test-retest reliability were > 0.70. The measures were generally free of floor and ceiling effects and measurement error was minimal. Convergent and discriminant validity were consistent with well-known constructs in the field. Hypotheses for known groups validity were partially supported (there were generally group differences for the EOL planning measures, but not for meaning and purpose or concern with death and dying). Measurement error was acceptable and there were minimal changes over time across the EOL measures.

CONCLUSIONS

Results support the clinical utility of the HDQLIFE EOL measures in persons with HD.

Robot Diagnosis Test for Egocentric and Allocentric Hemineglect

OBJECTIVE

Patients with hemineglect fail to respond to egocentric stimuli or allocentric parts of stimuli contralateral to the brain lesion. The clinical diagnosis of hemineglect mainly involves evaluation of the egocentric form, while less sensitive standardized tests exist for other forms. Our global aim is to develop an innovative integrative robot measure, the MonAmour test, combining the assessment of egocentric, allocentric and motor hemineglect. Here, we present the egocentric and allocentric evaluations.

METHODS

Thirty-five first stroke patients (25 hemineglect) and 56 age-matched healthy controls were assessed on the index test (MonAmour) and on three reference standard tests (Bells test, Apples test and Neglect subtest of the Test for Attentional Performance). Based on controls' performance, normative data were created. Validity was evaluated between the MonAmour and the reference standard tests through correlations and test sensitivity/specificity. Reliability of the MonAmour was measured with test-retest and minimal detectable change.

RESULTS

Results demonstrated moderate to strong correlations between the MonAmour and the reference standard tests (r = .40-.88, p < .001 - p = .016). The sensitivity was high (50%-96%), with accurate diagnosis of patients with hemineglect, and reliability was excellent (Intraclass Correlation Coefficient = .79-.95, p < .001).

CONCLUSIONS

The MonAmour robot test is a valid, sensitive and reliable tool that can diagnose egocentric and allocentric hemineglect. Future studies will deepen the assessment and understanding of the different forms of hemineglect by testing the motor component of the test in order to use this accurate and integrative measure in daily clinical routine.

REGISTRATION

ClinicalTrials.gov(NCT02543424).

Rasch analysis of the Forgotten Joint Score in patients undergoing knee arthroplasty

PURPOSE

The purpose of this study was to test the hypothesis that the "Forgotten Joint Score" (FJS-12) is a unidimensional interval-level scale. Unidimensionality refers to measuring a single attribute, i.e., the single ability to forget the arthroplasty. If this property is not verified, the interpretation of the score can be confusing. Unidimensionality is an essential prerequisite of construct validity and required if FJS-12 response data are to be validly summated into a single score. Interval-level dimension is an essential prerequisite of the parametric statistics. Rasch analysis was used to test our study hypothesis.

METHODS

The FJS-12 questionnaire was validated in 248 unilateral knee arthroplasty patients. Successive analyses were used to select items with good psychometric qualities to constitute the new "FJS". The external validity was assessed with the KUJALA questionnaire.

RESULTS

Quantity of relevant items was greater than 50%. Of the 12 original items, nine showed disturbed thresholds, indicating that patients were unable to discriminate among the five levels for these items. The data set was reanalyzed using a four-level scale. The new analysis indicated that the internal consistency was good (r = 0.84). Three items did not fit with the model and they were removed. The nine items of the final scale defined a unidimensional and linear measure of the forgotten joint, and showed a continuous progression in their difficulty. The perception of difficulty was group-independent. The correlation coefficient was moderate between FJS and KUJALA score (r = 0.4).

CONCLUSIONS

This new and items reduced FJS can be used in clinical practice with good psychometric qualities. It provides a reliable tool to follow up patient's evolution and document changes related to knee arthroplasty. This valid FJS is needed in evaluating patients' assessment, one indicator of quality of care.

LEVEL OF EVIDENCE

III-Therapeutic.

Systematic Review of Symptom Assessment Measures for Use in Measurement-Based Care of Bipolar Disorders

OBJECTIVE

Utilization of measurement-based care (MBC) for bipolar disorders is limited, in part because of uncertainty regarding the utility of available measures. The aim of this study was to synthesize the literature on patient-reported and clinician-observed measures of symptoms of bipolar disorder and the potential use of these measures in MBC.

METHODS

A systematic review of multiple databases (PubMed, Embase, PsycINFO, Cochrane Library, and other gray literature) was conducted in June 2017 to identify validated measures. Data on the psychometric properties of each measure were extracted and used to assess the measure's clinical utility on the basis of established guidelines.

RESULTS

Twenty-eight unique measures were identified in 39 studies, including four patient-reported and six clinician-observed measures assessing manic symptoms, three patient-reported and five clinician-observed measures of depressive symptoms, and six patient-reported and four clinician-observed measures of both symptom types. Patient-reported measures with the highest clinical utility included the Altman Self-Rating Mania Scale for assessment of manic symptoms, the Quick Inventory of Depressive Symptomatology-Self Report (QIDS-SR) (depressive symptoms), and the Internal State Scale (both types). Highly rated clinician (C)-observed scales were the Bech-Rafaelsen Mania Rating Scale (mania), the QIDS-C (depressive symptoms), and the Bipolar Inventory of Symptoms Scale (both types).

CONCLUSIONS

Suitable choices are available for MBC of bipolar disorders. The choice of a measure could be informed by clinical utility score and may also depend on how clinicians or practices weigh each category of the clinical utility scale and on the clinical setting and presenting problem.

Turkish translation, cross-cultural adaptation, and assessment of psychometric properties of the Functional Status Score for the Intensive Care Unit

Purpose: To translate and cross-culturally adapt the Functional Status Score for the Intensive Care Unit instrument to Turkish and investigate its psychometric properties.Methods: An expert committee supervised forward and backward translation. Thirteen participants reviewed the pre-final version of Turkish Functional Status Score for the Intensive Care Unit instrument providing minor revisions to improve its readability. Two physiotherapists assessed patients (N = 50) from a coronary intensive care unit using the Turkish Functional Status Score for the Intensive Care Unit instrument.Results: Internal consistency was excellent (Cronbach's α = 0.949). Inter-rater reliability and intra-rater reliability were excellent for each of five functional tasks and total scores (intra-class correlation coefficient = 0.955-0.996). The Turkish Functional Status Score for the Intensive Care Unit score had moderate to high correlations with other functional measures as follows: Perme Intensive Care Unit Mobility Score (Spearman's r = 0.92), Katz Activities of Daily Living (r = 0.80), handgrip strength (r =  0.76-0.77), and knee extension strength (r = 0.70-0.71).Conclusion: The Functional Status Score for the Intensive Care Unit instrument was translated and culturally adapted to Turkish and demonstrated strong psychometric properties, including internal consistency, intra-rater and inter-rater reliability, construct validity, and floor and ceiling effects.Implications for rehabilitationRehabilitation professionals strive to assess and document patient status using validated and reliable outcome measures as part of good clinical practice.Longitudinal evaluation of physical function in the intensive care units is important.The Functional Status Score for the Intensive Care Unit is a validated and reliable physical functioning measurement instrument suitable for the intensive care units.The Functional Status Score for the Intensive Care Unit was translated and culturally adapted to Turkish, and demonstrated strong psychometric properties, including internal consistency, intra-rater reliability, inter-rater reliability, construct validity, and floor and ceiling effects.

Perception Versus Reaction: Comparison of Tinnitus Psychoacoustic Measures and Tinnitus Functional Index Scores

Purpose Psychoacoustic characteristics of tinnitus include its loudness and pitch. These characteristics are commonly measured and reported; however, it has not been shown that they are associated with the impact, or bothersomeness, of tinnitus. This study addressed this question by determining correlations between measures of tinnitus loudness, tinnitus pitch, and functional effects of tinnitus. Method Tinnitus loudness matches, pitch matches, a numeric rating scale (NRS) of tinnitus loudness, and responses to the 25-item tinnitus functional index (TFI) were obtained from 223 participants who experienced tinnitus for at least 6 months. Estimates of tinnitus pitch were calculated by use of a Bayesian sequential analysis technique. Results The total TFI score, as well as each of its 8 subscales, had weak or no correlations with both loudness matches and pitch matches, but moderate correlations with the NRS. Conclusions Psychoacoustic measurements used to estimate aspects of tinnitus perception appear unrelated to the impact of tinnitus, as assessed by a subjective outcome instrument. These psychoacoustic measurements do not assess reactions to tinnitus. These reactions should be measured by validated questionnaires, such as the TFI, which are designed to measure tinnitus impact. The moderate correlations between the NRS and the TFI suggest that self-reported tinnitus loudness is more a measure of tinnitus reactions than perception.

French-Canadian Adaptation and Validation of the Swiss Spinal Stenosis Questionnaire for Patients With Lumbar Spinal Stenosis

STUDY DESIGN

An observational prospective study.

OBJECTIVE

The study objective was to assess the reliability and validity of the French-Canadian version (FCSSSQ) of the Swiss Spinal Stenosis questionnaire (SSSQ).

SUMMARY OF BACKGROUND DATA

The SSSQ is a validated disease-specific tool developed to assess pain, function, and satisfaction with care in patients with lumbar spinal stenosis (LSS).

METHODS

The French-Canadian translation and adaptation of the SSSQ was completed following a four-stage approach: (1) forward translation; (2) synthesis; (3) expert committee review; and (4) testing of the questionnaire prefinal version. Psychometric properties were subsequently determined in patients who had undergone decompressive surgery for degenerative LSS. Patients completed the SSSQ adapted version, the Numerical Rating Scale, and the Oswestry Disability Index. Test-retest reliability was assessed with weighted Kappa score and intraclass correlation coefficient. Construct validity was evaluated using the Spearman correlation coefficient and responsiveness with the mean standardized response as well as the area under the receiver operating characteristic curve (AUROC). Floor and ceiling effects and internal consistency were also evaluated.

RESULTS

Twenty-five and 50 patients were included for the adaptation and validation processes, respectively. The test-retest reliability of the FCSSSQ total score was excellent [intraclass correlation coefficient (ICC) = 0.996; 95% confidence interval (95% CI) 0.938-0.982]. High Spearman correlation coefficients were also found between the total FCSSSQ score and the leg pain Numerical Rating Scale (NRS, 0.801), back pain NRS (0.705), and the Oswestry Disability Index (ODI, 0.825) scores. External responsiveness analysis was satisfactory with an AUROC of 0.875 (95% CI 0.744-1.0). The lowest FCSSSQ possible score was observed in five patients (10%), whereas no patients reported the highest possible score. The Cronbach α coefficient ranged from 0.810 to 0.945 indicating good to excellent internal consistency.

CONCLUSION

The French-Canadian version of the SSSQ is a reliable and valid questionnaire consistent with the original English version. This new version will help French-speaking clinicians and scientists document changes in condition and treatment satisfaction in patients with LSS.

LEVEL OF EVIDENCE

2.

Use of a Single Wireless IMU for the Segmentation and Automatic Analysis of Activities Performed in the 3-m Timed Up & Go Test

Falls represent a major public health problem in the elderly population. The Timed Up & Go test (TU & Go) is the most used tool to measure this risk of falling, which offers a unique parameter in seconds that represents the dynamic balance. However, it is not determined in which activity the subject presents greater difficulties. For this, a feature-based segmentation method using a single wireless Inertial Measurement Unit (IMU) is proposed in order to analyze data of the inertial sensors to provide a complete report on risks of falls. Twenty-five young subjects and 12 older adults were measured to validate the method proposed with an IMU in the back and with video recording. The measurement system showed similar data compared to the conventional test video recorded, with a Pearson correlation coefficient of 0.9884 and a mean error of 0.17 ± 0.13 s for young subjects, as well as a correlation coefficient of 0.9878 and a mean error of 0.2 ± 0.22 s for older adults. Our methodology allows for identifying all the TU & Go sub–tasks with a single IMU automatically providing information about variables such as: duration of sub–tasks, standing and sitting accelerations, rotation velocity of turning, number of steps during walking and turns, and the inclination degrees of the trunk during standing and sitting.

Understanding Health-Related Quality of Life in Caregivers of Civilians and Service Members/Veterans With Traumatic Brain Injury: Reliability and Validity Data for the TBI-CareQOL Measurement System

OBJECTIVES

To establish the reliability and validity of the newly developed TBI-CareQOL patient-reported outcome (PRO) measures in caregivers of civilians and service members/veterans (SMVs) with traumatic brain injury (TBI) so that they can be used with confidence in clinical research and practice.

DESIGN

Computer-based surveys delivered through an on-line data capture platform.

SETTING

Three TBI Model Systems rehabilitation hospitals, an academic medical center, and a military medical treatment facility.

PARTICIPANTS

Caregivers (N=560) of individuals with TBI; this included 2 different study samples: 344 caregivers of civilians with TBI and 216 caregivers of SMVs with TBI.

INTERVENTION

Not Applicable.

MAIN OUTCOME MEASURES

Five Traumatic Brain Injury Caregiver Quality of Life (TBI-CareQOL) item banks.

RESULTS

Reliabilities for the TBI-CareQOL measures were excellent (all Cronbach's α >.88); 3-week test-retest reliability ranged from .75 to .90 across the 2 samples. Convergent validity was supported by moderate to high associations among the TBI-CareQOL measures and moderate correlations between the TBI-CareQOL measures and other measures of health-related quality of life (HRQOL) and caregiver burden. Discriminant validity was supported by low correlations between the TBI-CareQOL measures and less-related constructs (eg, caregiver satisfaction). Known-groups validity was supported: caregivers of individuals that were low functioning had worse HRQOL than caregivers of high-functioning individuals.

CONCLUSIONS

Results provide psychometric support for the new TBI-CareQOL item banks. As such, these measures fill a significant gap in the caregiver literature where sensitive PRO measures that capture changes in HRQOL are needed to detect improvements for interventions designed to assist family caregivers.

Psychometric Properties Study of the Oswestry Disability Index in a Spanish Population With Previous Lumbar Disc Surgery: Homogeneity and Validity

STUDY DESIGN

Evaluation of the psychometric properties of a questionnaire.

OBJECTIVE

To assess the psychometric properties of the Spanish version of the Oswestry Disability Index (ODI) in a Spanish population with previous lumbar disc surgery.

SUMMARY OF BACKGROUND DATA

ODI is frequently used for measuring disability in spinal disorders. In 1995, ODI was translated and transculturally adapted into the Spanish context; its content and apparent validity, internal consistency and test-retest reliability were demonstrated for a Spanish population with lumbar pain. However, this score has not been tested in terms of discriminative capacity (floor and ceiling effects) and construct validity.

METHODS

Two hundred seventy-five patients who had previously undergone surgical treatment for disc lumbar herniation completed the ODI, Short-Form 36 (SF36), EuroQol-5D (EQ5D), and Numerical Rating Scale for Back Pain. Internal consistency, floor and ceiling effects and construct validity (convergent, divergent, and "known-groups" validities) were assessed.

RESULTS

Spanish ODI showed a very good internal consistency: Cronbach-α coefficient for ODI score was 0.928; Cronbach-α coefficient, if the item was deleted, did not increase by more than 0.1 for each item; and Item-total correlations ranged from strong to very strong. There was floor effect for both ODI score and for all individual items. There was no ceiling effect. Spanish ODI showed very good construct validity because 88% (7/8) of the hypotheses about convergent, divergent and "known-groups" validities were supported. Concerning convergent validity, ODI was strongly correlated with the Numerical Rating Scale for Back Pain (0.717; P < 0.001), SF36-Utility (rho = -0.786; P < 0.001), Physical Component Summary score SF36 (rho = -0.787; P < 0.001), Mental Component Summary score SF36 (rho = -0.605; P < 0.001), EQ5D-Utility (rho = -0.833; P < 0.001) and some EQ5D physical components.

CONCLUSION

Spanish ODI showed good psychometric properties (internal consistency and construct validity), similar to others validation studies. Spanish ODI is a valid instrument for the measurement of disability in Spanish patients with previous lumbar disc surgery, specifically in patients with moderate/intense disability.

LEVEL OF EVIDENCE

4.