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Objectives: To identify patient-centered domains with long-term relevance to people with rheumatoid arthritis (RA)., Methods: We conducted semi-structured individual cognitive interviews of patients with RA with at least five years of disease duration, sampled from five different countries (United States, Italy, Spain, Mexico, and Argentina). Participants were encouraged to discuss their long-term concerns regarding RA. Interviews were transcribed and analyzed using qualitative content analysis within a constructivist/interpretivist theoretical framework., Results: Twenty-eight participants were interviewed, 24 were women. Six main themes, representing important aspects of the daily life of people with RA were generated: (i) Living with symptoms and functional limitations, (ii) Lack of participation, (iii) Partner and family issues, (iv) Risk of damage to vital organs, (v) Coping strategies, and (vi) Healthcare concerns, primarily expressed by participants from non-European countries lacking universal healthcare coverage. In addition, participants discussed the importance of contextual factors and how they impact long-term outcomes. These included attitudes towards disease, social support, or financial burdens., Conclusions: We identified six domains of importance to people with RA that are seldom measured in longitudinal registries and should be considered in patient-centered longitudinal studies., (Copyright © 2022. Published by Elsevier Inc.)

Objective: The current Juvenile Idiopathic Arthritis (JIA) Core Set used in randomized controlled trials (RCT) and longitudinal observational studies (LOS) was developed without the input of patients/parents. At the Outcome Measures in Rheumatology (OMERACT) 2016, a special interest group voted to reconsider the core set, incorporating broader input. We describe subsequent work culminating in an OMERACT 2018 plenary and consensus voting., Methods: Candidate domains were identified through literature review, qualitative surveys, and online discussion boards (ODB) held with patients with JIA and parents in Australia, Italy, and the United States. A Delphi process with parents, patients, healthcare providers, researchers, and regulators served to edit the domain list and prioritize candidate domains. After the presentation of results, OMERACT workshop participants voted, with consensus set at > 70%., Results: Participants in ODB were 53 patients with JIA (ages 15-24 yrs) and 55 parents. Three rounds of Delphi considering 27 domains were completed by 190 (response rate 85%), 201 (84%), and 182 (77%) people, respectively, from 50 countries. There was discordance noted between domains prioritized by patients/parents compared to others. OMERACT conference voting approved domains for JIA RCT and LOS with 83% endorsement. Mandatory domains are pain, joint inflammatory signs, activity limitation/physical function, patient's perception of disease activity (overall well-being), and adverse events. Mandatory in specific circumstances: inflammation/other features relevant to specific JIA categories., Conclusion: Following the OMERACT methodology, we developed an updated JIA Core Domain Set. Next steps are to identify and systematically evaluate best outcome measures for these domains.