OMERACT Working Groups are dedicated teams focused on developing Core Outcome Sets and advancing related methodologies that shape the future of clinical research in rheumatology and musculoskeletal health. These groups are made up of clinicians, researchers, methodologists, and patient research partners who work collaboratively to ensure that the Core Outcome Sets they create are scientifically rigorous and patient-centered.

Each Working Group operates within OMERACT’s bottom-up structure—ideas and initiatives emerge from the ground level, guided by the experiences and expertise of those involved. Groups are self-organized around a shared goal or research need, and they follow a common process grounded in the OMERACT Handbook, which outlines the methods and standards used across all groups. This ensures consistency, transparency, and methodological integrity, regardless of the specific topic or disease area.

By focusing on the development of standardized, meaningful, and feasible Core Outcome Sets, OMERACT Working Groups play a vital role in improving the quality, comparability, and relevance of clinical trial measurements. Their work supports the development of evidence that is trusted by patients, clinicians, regulators, industry partners, and health technology assessors alike.