RT Journal Article SR Electronic T1 Updating the OMERACT Filter: Implications of Filter 2.0 to Select Outcome Instruments Through Assessment of “Truth”: Content, Face, and Construct Validity JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 1000 OP 1004 DO 10.3899/jrheum.131310 VO 41 IS 5 A1 Peter Tugwell A1 Maarten Boers A1 Maria-Antonietta D’Agostino A1 Dorcas Beaton A1 Annelies Boonen A1 Clifton O. Bingham III A1 Ernest Choy A1 Philip G. Conaghan A1 Maxime Dougados A1 Catia Duarte A1 Daniel E. Furst A1 Francis Guillemin A1 Laure Gossec A1 Turid Heiberg A1 Désirée M. van der Heijde A1 Sarah Hewlett A1 John R. Kirwan A1 Tore K. Kvien A1 Robert B. Landewé A1 Philip J. Mease A1 Mikkel Østergaard A1 Lee Simon A1 Jasvinder A. Singh A1 Vibeke Strand A1 George Wells YR 2014 UL http://www.jrheum.org/content/41/5/1000.abstract AB Objective. The Outcome Measures in Rheumatology (OMERACT) Filter provides guidelines for the development and validation of outcome measures for use in clinical research. The “Truth” section of the OMERACT Filter requires that criteria be met to demonstrate that the outcome instrument meets the criteria for content, face, and construct validity. Methods. Discussion groups critically reviewed a variety of ways in which case studies of current OMERACT Working Groups complied with the Truth component of the Filter and what issues remained to be resolved. Results. The case studies showed that there is broad agreement on criteria for meeting the Truth criteria through demonstration of content, face, and construct validity; however, several issues were identified that the Filter Working Group will need to address. Conclusion. These issues will require resolution to reach consensus on how Truth will be assessed for the proposed Filter 2.0 framework, for instruments to be endorsed by OMERACT.