%0 Journal Article %A Malin Regardt %A Christopher A. Mecoli %A Jin Kyun Park %A Ingrid de Groot %A Catherine Sarver %A Merrilee Needham %A Marianne de Visser %A Beverly Shea %A Clifton O. Bingham III %A Ingrid E. Lundberg %A Yeong W. Song %A Lisa Christopher-Stine %A Helene Alexanderson %T OMERACT 2018 Modified Patient-reported Outcome Domain Core Set in the Life Impact Area for Adult Idiopathic Inflammatory Myopathies %D 2019 %R 10.3899/jrheum.181065 %J The Journal of Rheumatology %P jrheum.181065 %X Objective To present and vote on a myositis modified patient-reported outcome core domain set in the life impact area at the Outcome Measures in Rheumatology (OMERACT) 2018. Methods Based on results from international focus groups and Delphi surveys, a draft core set was developed. Results Domains muscle symptoms, fatigue, level of physical activity, and pain reached ≥ 70% consensus and were mandatory to assess in all trials. Domains lung, joint, and skin symptoms were mandatory in specific circumstances. This core set was endorsed by > 85% at OMERACT 2018. Conclusion We propose a life impact core set for patients with idiopathic inflammatory myopathies and will proceed with instrument selections. %U https://www.jrheum.org/content/jrheum/early/2019/02/12/jrheum.181065.full.pdf