RT Journal Article SR Electronic T1 Instruments Measuring Physical Function for Psoriatic Arthritis Endorsed at GRAPPA 2020 Annual Meeting: Updates of the GRAPPA-OMERACT Working Group JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP jrheum.201679 DO 10.3899/jrheum.201679 A1 Leung, Ying Ying A1 Orbai, Ana-Maria A1 Tillett, William A1 Ogdie, Alexis A1 Eder, Lihi A1 Goel, Niti A1 Hojgaard, Pil A1 Holland, Richard A1 Mathew, Ashish J. A1 Lindsay, Christine A. A1 Antony, Anna A1 Chau, Jeffrey A1 Christensen, Robin A1 Coates, Laura C. A1 Mease, Philip J. A1 Strand, Vibeke A1 FitzGerald, Oliver A1 de Wit, Maarten A1 Callis Duffin, Kristina A1 Gladman, Dafna D. YR 2021 UL http://www.jrheum.org/content/early/2021/02/24/jrheum.201679.abstract AB The Group for Research and Assessment of Psoriasis and Psoriatic Arthritis (GRAPPA)–Outcome Measures in Rheumatology (OMERACT) Psoriatic Arthritis (PsA) Working Group provided updates at the 2020 GRAPPA annual meeting on its work toward developing a core outcome set for PsA. Working groups were set up for the 4 prioritized domains: enthesitis, fatigue, structural damage, and physical function. Two instruments for measurement of physical function were provisionally endorsed: (1) the Health Assessment Questionnaire–Disability Index and (2) the physical functioning domain in the Medical Outcomes Study 36-item Short Form survey.