Minimal Detectable Changes of the Health Assessment Questionnaire–Disability Index, Patient-Reported Outcomes Measurement Information System-29 Profile Version 2.0 Domains, and Patient Health Questionnaire-8 in People With Systemic Sclerosis: A Scleroderma Patient-Centered Intervention Network Cohort Cross-Sectional Study
Afra Alkan, Marie-Eve Carrier, Richard S. Henry, Linda Kwakkenbos, Susan J. Bartlett, Amy Gietzen, Karen Gottesman, Geneviève Guillot, Amanda Lawrie-Jones, Marie Hudson, Laura K. Hummers, Vanessa L. Malcarne, Maureen D. Mayes, Luc Mouthon, Michelle Richard, Robyn K. Wojeck, Maureen Worron-Sauvé, Andrea Benedetti, Brett D. Thombs, the Scleroderma Patient-Centered Intervention Network Investigators
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引用次数: 0
Abstract
Objective
Systemic sclerosis (SSc) is a rare, chronic autoimmune disorder associated with disability, diminished physical function, fatigue, pain, and mental health concerns. We assessed minimal detectable changes (MDCs) of the Health Assessment Questionnaire–Disability Index (HAQ-DI), Patient-Reported Outcomes Measurement Information System-29 Profile version 2.0 (PROMIS-29v2.0) domains, and Patient Health Questionnaire (PHQ)-8 in people with SSc.
Methods
Scleroderma Patient-Centered Intervention Network Cohort participants completed the HAQ-DI, PROMIS-29v2.0 domains, and PHQ-8 at baseline assessments from April 2014 until August 2023. We estimated MDC95 (smallest change that can be detected with 95% certainty) and MDC90 (smallest change that can be detected with 90% certainty) with 95% confidence intervals (CIs) generated via the percentile bootstrapping method resampling 1,000 times. We compared MDC estimates by age, sex, and SSc subtype.
Results
A total of 2,571 participants were included. Most were female (n = 2,241; 87%), and 38% (n = 976) had diffuse SSc. Mean (±SD) age was 54.9 (±12.7) years and duration since onset of first non-Raynaud phenomenon symptom was 10.8 (±8.7) years. MDC95 estimate was 0.41 points (95% CI 0.40–0.42) for the HAQ-DI, between 4.88 points (95% CI 4.72–5.05) and 9.02 points (95% CI 8.80–9.23) for the seven PROMIS-29v2.0 domains, and 5.16 points (95% CI 5.06–5.26) for the PHQ-8. MDC95 estimates were not materially different across subgroups.
Conclusion
MDC95 and MDC90 estimates were precise and similar across age, sex, and SSc subtype groups. HAQ-DI MDC95 and MDC90 were substantially larger than previous estimates of HAQ-DI minimal important difference from several small studies. Minimally important differences of all measures should be evaluated in large studies using anchor-based methods.
期刊介绍:
Arthritis Care & Research, an official journal of the American College of Rheumatology and the Association of Rheumatology Health Professionals (a division of the College), is a peer-reviewed publication that publishes original research, review articles, and editorials that promote excellence in the clinical practice of rheumatology. Relevant to the care of individuals with rheumatic diseases, major topics are evidence-based practice studies, clinical problems, practice guidelines, educational, social, and public health issues, health economics, health care policy, and future trends in rheumatology practice.