PT  - JOURNAL ARTICLE
AU  - Robin Christensen
AU  - Lara J.  Maxwell
AU  - Peter Jüni
AU  - David Tovey
AU  - Paula R.  Williamson
AU  - Maarten Boers
AU  - Niti Goel
AU  - Rachelle Buchbinder
AU  - Lyn March
AU  - Caroline B.  Terwee
AU  - Jasvinder A.  Singh
AU  - Peter Tugwell
TI  - Consensus on the Need for a Hierarchical List of Patient-reported Pain Outcomes for Metaanalyses of Knee Osteoarthritis Trials: An OMERACT Objective
AID  - 10.3899/jrheum.141384
DP  - 2015 May 01
TA  - The Journal of Rheumatology
PG  - jrheum.141384
4099  - http://www.jrheum.org/content/early/2015/04/27/jrheum.141384.short
4100  - http://www.jrheum.org/content/early/2015/04/27/jrheum.141384.full
AB  - Objective Although protocol registration for systematic reviews is still not mandatory, reviewers should be strongly encouraged to register the protocol to identify the methodological approach, including all outcomes of interest. This will minimize the likelihood of biased decisions in reviews, such as selective outcome reporting. A group of international experts convened to address issues regarding the need to develop hierarchical lists of outcome measurement instruments for a particular outcome for metaanalyses. Methods Multiple outcome measurement instruments exist to measure the same outcome. Metaanalysis of knee osteoarthritis (OA) trials, and the assessment of pain as an outcome, was used as an exemplar to assess how Outcome Measures in Rheumatology (OMERACT), the Cochrane Collaboration, and other international initiatives might contribute in this area. The meeting began with formal presentations of background topics, empirical evidence from the literature, and a brief introduction to 2 existing hierarchical lists of pain outcome measurement instruments recommended for metaanalyses of knee OA trials. Results After discussions, most participants agreed that there is a need to develop a methodology for generation of hierarchical lists of outcome measurement instruments to guide metaanalyses. Tools that could be used to steer development of such a prioritized list are the COSMIN checklist (Consensus-based Standards for the selection of health status Measurement Instruments) and the OMERACT Filter 2.0. Conclusion We list meta-epidemiological research agenda items that address the frequency of reported outcomes in trials, as well as methodologies to assess the best measurement properties (i.e., truth, discrimination, and feasibility).