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 Tugwell, Peter A1 Boers, Maarten A1 D’Agostino, Maria-Antonietta A1 Beaton, Dorcas A1 Boonen, Annelies A1 Bingham, Clifton O. A1 Choy, Ernest A1 Conaghan, Philip G. A1 Dougados, Maxime A1 Duarte, Catia A1 Furst, Daniel E. A1 Guillemin, Francis A1 Gossec, Laure A1 Heiberg, Turid A1 van der Heijde, Désirée M. A1 Hewlett, Sarah A1 Kirwan, John R. A1 Kvien, Tore K. A1 Landewé, Robert B. A1 Mease, Philip J. A1 Østergaard, Mikkel A1 Simon, Lee A1 Singh, Jasvinder A. A1 Strand, Vibeke A1 Wells, George 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.