Instruments Measuring Physical Function for Psoriatic Arthritis Endorsed at GRAPPA 2020 Annual Meeting: Updates of the GRAPPA-OMERACT Working Group.

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.

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Authors: Ying Ying Leung, Ana-Maria Orbai, William Tillett, Alexis Ogdie, Lihi Eder, Niti Goel, Pil Hojgaard, Richard Holland, Ashish J Mathew, Christine A Lindsay, Anna Antony, Jeffrey Chau, Robin Christensen, Laura C Coates, Philip J Mease, Vibeke Strand, Oliver FitzGerald, Maarten de Wit, Kristina Callis Duffin, Dafna D Gladman