PT - JOURNAL ARTICLE AU - Susan Humphrey-Murto AU - Richard Crew AU - Beverley Shea AU - Susan J. Bartlett AU - Lyn March AU - Peter Tugwell AU - Lara J. Maxwell AU - Dorcas Beaton AU - Shawna Grosskleg AU - Maarten de Wit TI - Consensus Building in OMERACT: Recommendations for Use of the Delphi for Core Outcome Set Development AID - 10.3899/jrheum.181094 DP - 2019 Feb 15 TA - The Journal of Rheumatology PG - jrheum.181094 4099 - http://www.jrheum.org/content/early/2019/02/12/jrheum.181094.short 4100 - http://www.jrheum.org/content/early/2019/02/12/jrheum.181094.full AB - Objective Developing international consensus on outcome measures for clinical trials is challenging. The following paper will review consensus building in Outcome Measures in Rheumatology (OMERACT), with a focus on the Delphi. Methods Based on the literature and feedback from delegates at OMERACT 2018, a set of recommendations is provided in the form of the OMERACT Delphi Consensus Checklist. Results The OMERACT delegates generally supported the use of the checklist as a guide. The checklist provides guidance for clearly outlining the multiple aspects of the Delphi process. Conclusion OMERACT is deeply committed to consensus building and these recommendations should be considered a work in progress.