RT Journal Article SR Electronic T1 Test-retest Reliability for HAQ-DI and SF-36 PF for the Measurement of Physical Function in Psoriatic Arthritis JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 1547 OP 1551 DO 10.3899/jrheum.210175 VO 48 IS 10 A1 Ying Ying Leung A1 William Tillett A1 Pil Hojgaard A1 Ana-Maria Orbai A1 Richard Holland A1 Ashish J. Mathew A1 Niti Goel A1 Jeffrey Chau A1 Christine A. Lindsay A1 Alexis Ogdie A1 Laura C. Coates A1 Robin Christensen A1 Philip J. Mease A1 Vibeke Strand A1 Dafna D. Gladman YR 2021 UL http://www.jrheum.org/content/48/10/1547.abstract AB Objective. Due to no existing data, we aimed to derive evidence to support test-retest reliability for the Health Assessment Questionnaire–Disability Index (HAQ-DI) and 36-item Short Form Health Survey physical functioning domain (SF-36 PF) in psoriatic arthritis (PsA).Methods. We identified datasets that collected relevant data for test-retest reliability for HAQ-DI and SF-36 PF, and evaluated them using Outcome Measures in Rheumatology (OMERACT) Filter 2.1 methodology. We calculated intraclass correlation coefficients (ICC) as a measure of test-retest reliability. We then conducted a quality assessment and evaluated the adequacy of test-retest reliability performance.Results. Two datasets were identified for HAQ-DI and 1 for SF-36 PF in PsA. The quality of the datasets was good. The ICCs for HAQ-DI were good and excellent in study 1 (0.90, 95% CI 0.79–0.95) and study 2 (0.94, 95% CI 0.89–0.97). The ICC for SF-36 PF was excellent (0.96, 95% CI 0.92–0.98). The performance of test-retest reliability for both instruments was judged to be adequate.Conclusion. The new data derived support good and reasonable test-retest reliability for HAQ-DI and SF-36 PF in PsA.