RT Journal Article SR Electronic T1 Report of the GRAPPA-OMERACT Psoriatic Arthritis Working Group from the GRAPPA 2015 Annual Meeting JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 965 OP 969 DO 10.3899/jrheum.160116 VO 43 IS 5 A1 Ana-Maria Orbai A1 Philip J. Mease A1 Maarten de Wit A1 Umut Kalyoncu A1 Willemina Campbell A1 William Tillett A1 Lihi Eder A1 Musaab Elmamoun A1 Oliver FitzGerald A1 Dafna D. Gladman A1 Niti Goel A1 Laure Gossec A1 Chris A. Lindsay A1 Ingrid Steinkoenig A1 Philip S. Helliwell A1 Neil J. McHugh A1 Vibeke Strand A1 Alexis Ogdie YR 2016 UL http://www.jrheum.org/content/43/5/965.abstract AB The GRAPPA-OMERACT psoriatic arthritis (PsA) working group is in the process of updating the PsA core domain set to improve and standardize the measurement of PsA outcomes. Work streams comprise literature reviews of domains and outcome measurement instruments, an international qualitative research project with PsA patients to generate domains important to patients, outcome measurement instrument assessment, conduct of domain consensus panels with patients and physicians, and evidence-based selection of instruments. Patient research partners are involved in each of the projects. The working group will present findings and seek endorsement for the new PsA core domain set, outcome measurement set, and research agenda at the OMERACT meeting in May 2016.