RT Journal Article SR Electronic T1 Consensus Building in OMERACT: Recommendations for Use of the Delphi for Core Outcome Set Development JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 1041 OP 1046 DO 10.3899/jrheum.181094 VO 46 IS 8 A1 Susan Humphrey-Murto A1 Richard Crew A1 Beverley Shea A1 Susan J. Bartlett A1 Lyn March A1 Peter Tugwell A1 Lara J. Maxwell A1 Dorcas Beaton A1 Shawna Grosskleg A1 Maarten de Wit YR 2019 UL http://www.jrheum.org/content/46/8/1041.abstract 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.