PT  - JOURNAL ARTICLE
AU  - Dorcas E.  Beaton
AU  - Lara J.  Maxwell
AU  - Beverley J.  Shea
AU  - George A.  Wells
AU  - Maarten Boers
AU  - Shawna Grosskleg
AU  - Clifton O.  Bingham III
AU  - Philip G.  Conaghan
AU  - Maria Antonietta  D’Agostino
AU  - Maarten de Wit
AU  - Laure Gossec
AU  - Lyn M.  March
AU  - Lee S.  Simon
AU  - Jasvinder A.  Singh
AU  - Vibeke Strand
AU  - Peter Tugwell
TI  - Instrument Selection Using the OMERACT Filter 2.1: The OMERACT Methodology
AID  - 10.3899/jrheum.181218
DP  - 2019 Feb 01
TA  - The Journal of Rheumatology
PG  - jrheum.181218
4099  - http://www.jrheum.org/content/early/2019/01/23/jrheum.181218.short
4100  - http://www.jrheum.org/content/early/2019/01/23/jrheum.181218.full
AB  - Objective Outcome Measures in Rheumatology (OMERACT) Filter 2.1 revised the process used for core outcome measurement set selection to add rigour and transparency in decision making. This paper describes OMERACT’s methodology for instrument selection. Methods We presented instrument selection processes, tools, and reporting templates at OMERACT 2018, introducing the concept of “3 pillars, 4 questions, 7 measurement properties, 1 answer”. Truth, Discrimination and Feasibility are the three original OMERACT pillars. Based on these, we developed four signaling questions. We introduced the Summary of Measurement Properties (SOMP) table which summarizes the seven measurement properties: Truth (domain match, construct validity), Discrimination (test-retest reliability, longitudinal construct validity (responsiveness), clinical trial discrimination, thresholds of meaning), and Feasibility. These properties address a set of standards which, when met, answer the one question: Is there enough evidence to support the use of this instrument in clinical research of the benefits and harms of treatments in the population and study setting described? The OMERACT Filter 2.1 was piloted on two instruments by the Psoriatic Arthritis Working Group Results The methodology was reviewed in a full plenary session and facilitated breakout groups. Tools to facilitate retention of the process (i.e., “The OMERACT Way”) were provided. The two instruments were presented and the recommendation of the working group was endorsed in the first OMERACT Filter 2.1 Instrument Selection votes. Conclusion Instrument Selection using OMERACT Filter 2.1 is feasible and is now being implemented.