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Ardalan K, Marques MC, Cella D, Curran ML, Gray EL, Lee J, Fahey KJ, Wolfe ML, Pachman LM, Chang RW. Psychometric properties of patient-reported outcomes measurement information system (PROMIS) fixed short forms in Juvenile Myositis. Semin Arthritis Rheum 2025; 71:152649. [PMID: 39933204 PMCID: PMC11890175 DOI: 10.1016/j.semarthrit.2025.152649] [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: 05/26/2024] [Revised: 01/08/2025] [Accepted: 01/22/2025] [Indexed: 02/13/2025]
Abstract
OBJECTIVES Assess reliability and validity of Patient-Reported Outcomes Measurement Information System (PROMIS) pediatric self-report and parent-proxy report fixed short forms in juvenile myositis (JM). METHODS Children with JM (8-17yo) and parents of 5-17 yo JM patients completed PROMIS measures (Physical Function, Pain Interference, Fatigue, Emotional Distress), PedsQL Generic Core scales and Rheumatology Module (PedsQL-GC/-RM). Internal consistency reliability was assessed via Cronbach's alpha. Patient-parent agreement was assessed via intraclass correlations (ICC). Concurrent and construct validity were assessed via Spearman's correlations between PROMIS versus PedsQL-GC/-RM and clinical/lab data respectively. Known-groups validity was assessed by comparing PROMIS T-scores between clinically distinct JM patients. RESULTS We enrolled 75 JM participants, with 57 administered self-report and all 75 administered parent-proxy report measures per participant age. PROMIS measures were feasible (>96% completion), with high internal consistency reliability (Cronbach's alpha >0.8). Patient-parent assessments demonstrated moderate agreement (ICC >0.5) for Mobility, Upper Extremity, and Fatigue domains, and smaller correlations (ICC 0.41-0.47) as expected for Pain Interference, Depressive Symptoms, and Anxiety. Concurrent validity was demonstrated by moderate correlation (Spearman's rho >0.5) for all but 1 hypothesized relationships of PROMIS and PedsQL-GC/-RM domains. Although low disease activity and small sample size limited statistical power, construct validity and known-groups validity were demonstrable for multiple PROMIS pediatric self-report and parent-proxy report measures. CONCLUSION PROMIS measures show evidence of reliability and validity in JM. Child and parent reports differ sufficiently to suggest both should be collected. PROMIS measures can be considered for clinical and research use in JM.
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Affiliation(s)
- Kaveh Ardalan
- Division of Pediatric Rheumatology, Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA; Division of Rheumatology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA; Departments of Pediatrics and Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
| | - Mariana C Marques
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - David Cella
- Departments of Medical Social Sciences, Neurology, and Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Megan L Curran
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
| | - Elizabeth L Gray
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Jungwha Lee
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Kyle J Fahey
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Madison L Wolfe
- Division of Rheumatology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
| | - Lauren M Pachman
- Division of Rheumatology, Department of Pediatrics, Ann & Robert H. Lurie Children's Hospital of Chicago, The Cure JM Center of Excellence, The Stanley Manne Children's Research Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Rowland W Chang
- Departments of Preventive Medicine, Medicine, and Physical Medicine & Rehabilitation, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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Patel RN, Esparza VG, Lai JS, Gray EL, Reeve BB, Chang RW, Cella D, Ardalan K. Comparison of Patient-Reported Outcomes Measurement Information System Computerized Adaptive Testing Versus Fixed Short Forms in Juvenile Myositis. Arthritis Care Res (Hoboken) 2023; 75:381-390. [PMID: 34328696 PMCID: PMC8800940 DOI: 10.1002/acr.24760] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 06/24/2021] [Accepted: 07/27/2021] [Indexed: 02/01/2023]
Abstract
OBJECTIVE Patient-Reported Outcomes Measurement Information System (PROMIS) measures can be administered via computerized adaptive testing (CAT) or fixed short forms (FSFs), but the empirical benefits of CAT versus FSFs are unknown in juvenile myositis (JM). The present study was undertaken to assess whether PROMIS CAT is feasible, precise, correlated with FSFs, and less prone to respondent burden and floor/ceiling effects than FSFs in JM. METHODS Patients 8-17 years of age (self-report and parent proxy) and parents of patients 5-7 years of age (only parent proxy) completed PROMIS fatigue, pain interference, upper extremity function, mobility, anxiety, and depressive symptoms measures. Pearson correlations, paired t-tests, and Cohen's d were calculated between PROMIS CAT and FSFs. McNemar's test assessed floor/ceiling effects between CAT and FSFs. Precision and respondent burden were examined across the T score range. RESULTS Data from 67 patient-parent dyads were analyzed. CAT and FSF mean scores did not significantly differ except in parent proxy anxiety and fatigue (effect size 0.23 and 0.19, respectively). CAT had less pronounced floor/ceiling effects at the less symptomatic extreme in all domains except self-report anxiety. Increased item burden and higher SEs were seen in less symptomatic scorers for CAT. Modified stopping rules limiting CAT item administration did not decrease precision. CONCLUSION PROMIS CAT appears to be feasible and correlated with FSFs. CAT had less pronounced floor/ceiling effects, allowing detection of individual differences in less symptomatic patients. Modified stopping rules for CAT may decrease respondent burden. CAT can be considered for long-term follow-up of JM patients.
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Affiliation(s)
- Ruchi N. Patel
- Northwestern University Feinberg School of Medicine, Chicago, IL
| | | | - Jin-Shei Lai
- Departments of Medical Social Sciences and Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Elizabeth L. Gray
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Bryce B. Reeve
- Center for Health Measurement, Department of Population Health Sciences, Duke University School of Medicine, Durham, NC
| | - Rowland W. Chang
- Departments of Preventive Medicine, Medicine, and Physical Medicine & Rehabilitation, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - David Cella
- Departments of Medical Social Sciences, Neurology, Pediatrics, Preventive Medicine, and Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Kaveh Ardalan
- Division of Pediatric Rheumatology, Department of Pediatrics, Duke University School of Medicine, Durham, NC
- Division of Rheumatology, Ann & Robert H. Lurie Children’s Hospital of Chicago; Departments of Pediatrics and Medical Social Sciences, Northwestern University Feinberg School of Medicine
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Boros C, McCann L, Simou S, Cancemi D, Ambrose N, Pilkington CA, Cortina-Borja M, Wedderburn LR, on behalf of the JDM Cohort and Biomarker Study (JDCBS). Juvenile Dermatomyositis: what comes next? Long-term outcomes in childhood myositis from a patient perspective. Pediatr Rheumatol Online J 2022; 20:102. [PMID: 36384526 PMCID: PMC9670456 DOI: 10.1186/s12969-022-00754-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 10/16/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND To describe long-term outcomes in JDM using patient questionnaires and link to longitudinal, prospectively collected data for each patient within the Juvenile Dermatomyositis Cohort and Biomarker Study, UK and Ireland (JDCBS) to determine outcome predictors. METHODS: JDCBS participants aged ≥ 16y completed the SF36, HAQ and a questionnaire regarding current disease features, medications, education and employment. Data collected from the JDCBS included disease subtype, demographics, clinical and laboratory features. Intensity indices were calculated for physician VAS, modified skin DAS, CMAS and MMT8 by dividing area under the curve (AUC) from longitudinal score trajectories by duration of study follow-up (y). Relationships between questionnaire and JDCBS clinical / laboratory data were investigated fitting statistical models appropriate for cross sectional and longitudinal data. RESULTS Of 190 questionnaires sent, 84 (44%) were returned. Average age of respondents was 20.6 years (SD 3.9), time since diagnosis was 12.4 years (SD 5.0), age at onset was 9.2 years (SD 4.3), female to male ratio 4.25:1. Forty-nine (59%) self-reported persistently active disease, 54 (65%) were still taking immunosuppressive medication. 14/32 at school/higher education reported myositis adversely affecting academic results. 18-24 year-olds were twice as likely to be unemployed compared the UK population (OR = 0.456, 95% CI 0.24, 0.84, p = 0.001). Participants ≥ 18 years were three times as likely to be living with a parent/guardian (OR = 3.39, p < 0.001). SF36 MCS and MMT8 intensity index scores were significantly correlated (ρ = 0.328, p = 0.007). CONCLUSIONS After 12.4 years, questionnaire responders reported self-perceived high rates of persistently active disease and medication use, reduced rates of employment and were more likely to live with a parent/guardian. Perceived persistently active muscle disease appeared to affect quality of life in these patients and was the most significant contributor to long-term outcomes. Our findings highlight the importance of including the patient perspective in the assessment of long term outcomes, so that that we can start to target initial management strategies more effectively based on a combination of clinical and patient-reported data.
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Affiliation(s)
- C. Boros
- grid.1010.00000 0004 1936 7304University of Adelaide Discipline of Paediatrics Adelaide, Adelaide, Australia
| | - L. McCann
- grid.417858.70000 0004 0421 1374Paediatric Rheumatology, Alder Hey Children’s NHS Foundation Trust, Liverpool, UK
| | - S. Simou
- grid.83440.3b0000000121901201Infection, Immunity and Inflammation Teaching and Research Department, UCL GOS Institute of Child Health, 30 Guilford Street, London, WC1N 1EH UK
| | - D. Cancemi
- grid.83440.3b0000000121901201Infection, Immunity and Inflammation Teaching and Research Department, UCL GOS Institute of Child Health, 30 Guilford Street, London, WC1N 1EH UK
| | - N. Ambrose
- Blackrock Clinic, Blackrock, Co, Rock Road, Dublin, A94E4X7 Ireland
| | | | - M. Cortina-Borja
- grid.83440.3b0000000121901201Population, Policy and Practice Teaching and Research Department, UCL GOS Institute of Child Health, London, UK
| | - L. R Wedderburn
- grid.83440.3b0000000121901201Infection, Immunity and Inflammation Teaching and Research Department, UCL GOS Institute of Child Health, 30 Guilford Street, London, WC1N 1EH UK ,grid.451056.30000 0001 2116 3923Great Ormond Street Hospital for Children (GOSH), NIHR Biomedical Research Centre, London, UK
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Zigler CK, Randell RL, Reeve BB. Assessing Patient-Reported Outcomes in Pediatric Rheumatic Diseases: Considerations and Future Directions. Rheum Dis Clin North Am 2022; 48:15-29. [PMID: 34798944 PMCID: PMC9311483 DOI: 10.1016/j.rdc.2021.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
For children with pediatric rheumatic diseases (PRDs), the inclusion of patient-reported outcomes (PROs) is critical to inform decision making in health care delivery and research settings. PROs are direct reports from a child on their health status, without interpretation by anyone else. PROs improve understanding of the patient experience, allow clinicians to provide patient-centered care, and add value to clinical trials. When PROs cannot be collected directly from the patient, caregiver-proxy reports can provide important information on the child's more observable symptoms and functioning. In this article, we describe the current use of PROs in specific PRDs, align current research with best practice recommendations for both clinical care and research settings, highlight exciting new developments, and identify areas for future research.
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Affiliation(s)
- Christina K. Zigler
- Center for Health Measurement, Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina
| | - Rachel L. Randell
- Division of Pediatric Rheumatology, Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina
| | - Bryce B. Reeve
- Center for Health Measurement, Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina.,Pediatrics, Duke University School of Medicine, Durham, North Carolina
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Kim H, Huber AM, Kim S. Updates on Juvenile Dermatomyositis from the Last Decade: Classification to Outcomes. Rheum Dis Clin North Am 2021; 47:669-690. [PMID: 34635298 DOI: 10.1016/j.rdc.2021.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Juvenile dermatomyositis (JDM) is a heterogeneous disease with new classification criteria and updates in myositis-specific autoantibody and myositis-associated antibody groups. There are many validated assessment tools for assessing disease activity in JDM. Future studies will optimize these tools and improve feasibility in clinical and research contexts. Genetic and environmental risk factors, mechanisms of muscle pathology, role of interferon, vascular markers, and changes in immune cells provide insights to JDM pathogenesis. Outcomes have improved, but chronic disease, damage, and mortality highlight the need for better outcome predictors and treatments. Increased collaboration of stakeholders may help overcome research barriers and improve JDM treatment.
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Affiliation(s)
- Hanna Kim
- Juvenile Myositis Pathogenesis and Therapeutics Unit, National Institute of Arthritis Musculoskeletal and Skin Diseases, National Institutes of Health, 10 Center Drive, Building 10, 12N-240, Bethesda, MD 20892, USA.
| | - Adam M Huber
- IWK Health Centre and Dalhousie University, Division of Pediatric Rheumatology, 5850 University Avenue, Halifax, Nova Scotia B3K 6R8, Canada
| | - Susan Kim
- University of California, San Francisco, 550 16th Street, San Francisco, CA 94158, USA
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Tory H, Zurakowski D, Kim S, the CARRA Juvenile Dermatomyositis Quality Measures Workgroup for the CARRA Registry Investigators AbramsonL.AndersonE.AndrewM.BattleN.BeckerM.BenhamH.BeukelmanT.BirminghamJ.BlierP.BrownA.BrunnerH.CabreraA.CanterD.CarltonD.CarusoB.CeracchioL.ChalomE.ChangJ.CharpentierP.ClarkK.DeanJ.DedeogluF.FeldmanB.FergusonP.FoxM.FrancisK.GervasiniM.GoldsmithD.GortonG.GottliebB.GrahamT.GriffinT.GrosbeinH.GuppyS.HaftelH.HelfrichD.HigginsG.HillardA.HollisterJ. R.HsuJ.HudginsA.HungC.HuttenlocherA.IlowiteN.ImlayA.ImundoL.InmanC. J.JaqithJ.JerathR.JungL.KahnP.KapedaniA.KingsburyD.KleinK.Klein-GitelmanM.KunkelA.LapidusS.LayburnS.LehmanT.LindsleyC.Macgregor-HannahM.MalloyM.MawhorterC.McCurdyD.MimsK.MoorthyN.MorusD.MuscalE.NatterM.OlsonJ.O’NeilK.OnelK.OrlandoM.PalmquistJ.PhillipsM.PonderL.PrahaladS.PunaroM.PuplavaD.QuinnS.QuinteroA.RabinovichC.ReedA.ReedC.RingoldS.RiordanM.RobersonS.RobinsonA.RossetteJ.RothmanD.RussoD.RuthN.SchiklerK.SestakA.ShahamB.ShermanY.SimmonsM.SingerN.SpaldingS.StappH.SyedR.ThomasE.TorokK.TrejoD.TressJ.UptonW.VeheR.von SchevenE.WaltersL.WeissJ.WeissP.WelnickN.WhiteA.WooJ.WoottonJ.YalcindagA.ZappC.ZemelL.ZhuA.. Patient and physician discordance of global disease assessment in juvenile dermatomyositis: findings from the Childhood Arthritis & Rheumatology Research Alliance Legacy Registry. Pediatr Rheumatol Online J 2020; 18:5. [PMID: 31941511 PMCID: PMC6964044 DOI: 10.1186/s12969-020-0402-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 01/06/2020] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Global disease activity scores (gVAS) capture patient or family (PF) and physician (MD) assessments of disease. This study sought to measure discordance between PF and MD global activity scores in juvenile dermatomyositis (JDM), and determine factors associated with discordance. METHODS Patients with JDM were included from the Childhood Arthritis and Rheumatology Research Alliance (CARRA) Legacy Registry (N = 563). PF and MD gVAS were assessed for discordance, defined as a ≥ 2-point difference. Factors associated with discordant gVAS were compared in univariate analysis. Multivariable regression analysis was used to identify predictors of discordance. RESULTS Almost 40% (N = 219) of PF and MD gVAS were discordant. Among discordant scores, 68% of PF rated gVAS ≥2-points above MD, which was associated with calcinosis and lower quality of life and functional scores (p < 0.01). MD gVAS rated ≥2-points above PF in 32%, which was associated with abnormal laboratory results, weakness, arthritis, rash and other skin changes, and current intravenous steroid treatment (p < 0.01). In multivariate analysis, predictors for higher PF rating included calcinosis, lower quality of life and functional scores, while predictors for higher MD rating included rash, calcinosis, nailfold capillaroscopy changes, and current intravenous steroid treatment. CONCLUSIONS Discordance between PF and MD gVAS was common in this JDM cohort. Overall, higher PF rating was associated with poorer patient reported outcome (PRO) scores, while higher MD rating was associated with poorer objective measures. This suggests PF and MD assessments of gVAS may be measuring different aspects of disease, highlighting the importance of integrating PROs into clinical practice and research.
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Affiliation(s)
- Heather Tory
- Division of Pediatric Rheumatology, Connecticut Children's Medical Center, 282 Washington Street, Hartford, CT, 06106, USA. .,Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT, USA.
| | - David Zurakowski
- Departments of Anesthesiology and Surgery, Boston Children’s Hospital, Harvard Medical School, Boston, MA USA
| | - Susan Kim
- Pediatric Rheumatology, Benioff Children’s Hospital and University of San Francisco Medical Center, San Francisco, CA USA
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Ardoin SP, Daly RP, Merzoug L, Tse K, Ardalan K, Arkin L, Knight A, Rubinstein T, Ruth N, Wenderfer SE, Hersh AO, on behalf of the Childhood Arthritis and Rheumatology Research Alliance and Lupus Foundation of America. Research priorities in childhood-onset lupus: results of a multidisciplinary prioritization exercise. Pediatr Rheumatol Online J 2019; 17:32. [PMID: 31262324 PMCID: PMC6600895 DOI: 10.1186/s12969-019-0327-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 05/07/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Childhood-onset systemic erythematosus lupus (cSLE) is characterized by more severe disease, widespread organ involvement and higher mortality compared to adult-onset SLE. However, cSLE is largely underfunded to carry out necessary research to advance the field. Few commonly used SLE medications have been studied in children, and important knowledge gaps exist concerning epidemiology, genetics, pathophysiology and optimal treatments for cSLE. METHODS In order to assess highest cSLE research priority areas, the Lupus Foundation of America (LFA) and Childhood Arthritis and Rheumatology Research Alliance (CARRA) administered a cSLE research prioritization survey to pediatric rheumatologists, dermatologists and nephrologists with expertise in lupus. Members of LFA and CARRA's SLE Committee identified a list of cSLE research domains and developed a 17-item tiered, web-based survey asking respondents to categorize the research domains into high, medium, or low priority areas. For domains identified as high priority, respondents ranked research topics within that category. For example, for the domain of nephritis, respondents ranked importance of: epidemiology, biomarkers, long-term outcomes, quality improvement, etc. The survey was distributed to members of CARRA, Midwestern Pediatric Nephrology Consortium (MWPNC) and Pediatric Dermatology Research Alliance (PeDRA) Connective Tissue Disease group. RESULTS The overall response rate was 256/752 (34%). The highest prioritized research domains were: nephritis, clinical trials, biomarkers, neuropsychiatric disease and refractory skin disease. Notably, nephritis, clinical trials and biomarkers were ranked in the top five by all groups. Within each research domain, all groups showed agreement in identifying the following as important focus areas: determining best treatments, biomarkers/pathophysiology, drug discovery/novel treatments, understanding long term outcomes, and refining provider reported quality measures. CONCLUSION This survey identified the highest cSLE research priorities among leading rheumatology, dermatology and nephrology clinicians and investigators engaged in care of children with lupus. There is a strong need for multidisciplinary collaboration moving forward, which was indicated as highly important among stakeholders involved in the survey. These survey results should be used as a roadmap to guide funding and specific research programs in cSLE to address urgent, unmet needs among this population.
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Affiliation(s)
- Stacy P. Ardoin
- 0000 0004 0392 3476grid.240344.5Division of Pediatric Rheumatology, Nationwide Children’s Hospital, 700 Children’s Drive, Columbus, OH 43205 USA
| | - R Paola Daly
- 0000 0004 0616 4647grid.429277.dLupus Foundation of America, Washington, DC USA
| | - Lyna Merzoug
- 0000 0004 0616 4647grid.429277.dLupus Foundation of America, Washington, DC USA
| | - Karin Tse
- 0000 0004 0616 4647grid.429277.dLupus Foundation of America, Washington, DC USA
| | - Kaveh Ardalan
- 0000 0004 0388 2248grid.413808.6Ann & Robert H. Lurie Children’s Hospital, Chicago, IL USA
| | - Lisa Arkin
- 0000 0001 0701 8607grid.28803.31University of Wisconsin, Madison, WI USA
| | | | - Tamar Rubinstein
- 0000 0004 0566 7955grid.414114.5Children’s Hospital at Montefiore, Bronx, NY USA
| | - Natasha Ruth
- 0000 0001 2189 3475grid.259828.cMedical University of South Carolina, Charleston, SC USA
| | - Scott E. Wenderfer
- 0000 0001 2200 2638grid.416975.8Texas Children’s Hospital, Houston, TX USA
| | - Aimee O. Hersh
- 0000 0001 2193 0096grid.223827.eUniversity of Utah, Salt Lake City, UT USA
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Huber AM. The Importance of Patient Input into Development of Outcomes in Idiopathic Inflammatory Myopathy. J Rheumatol 2019; 46:5-6. [PMID: 30600235 DOI: 10.3899/jrheum.181045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- Adam M Huber
- IWK Health Centre, Halifax, Nova Scotia, Canada.
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