RT Journal Article SR Electronic T1 Methods of deriving EULAR/ACR recommendations on reporting disease activity in clinical trials of patients with rheumatoid arthritis JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 1365 OP 1373 DO 10.1136/ard.2008.092353 VO 67 IS 10 A1 T Karonitsch A1 D Aletaha A1 M Boers A1 S Bombardieri A1 B Combe A1 M Dougados A1 P Emery A1 D Felson A1 J Gomez-Reino A1 E Keystone A1 T K Kvien A1 E Martin-Mola A1 M Matucci-Cerinic A1 P Richards A1 P van Riel A1 J Siegel A1 J S Smolen A1 T Sokka A1 D van der Heijde A1 R van Vollenhoven A1 M Ward A1 G Wells A1 A Zink A1 R Landewe YR 2008 UL http://ard.bmj.com/content/67/10/1365.abstract AB Objective: To use an evidence-based and consensus-based approach to elaborate recommendations on how to report disease activity in clinical trials of patients with rheumatoid arthritis (RA) endorsed by the European League Against Rheumatism (EULAR) and the American College of Rheumatology (ACR).Methods: After an initial expert meeting, during which relevant research questions were identified, a systematic literature search was performed using Medline, Embase and the Cochrane Library as sources. To ensure literature retrieved was comprehensive, we emphasised search algorithms that were sensitive rather than specific. The results of the literature search were discussed by the expert panel, modified and expanded, and were used as the basis for the elaboration of the recommendation in the consensus process. Finally, an independent ACR panel approved these items with some minor modifications.Results: The following pieces of evidence were obtained from the literature search: (1) timing and the sustaining of a response is relevant to achieve better outcomes; (2) composite disease activity indices have been used to define low disease activity and remission and these definitions have been validated as has the American Rheumatism Association (ARA) remission criteria. The “patient-reported symptom state” (PASS) is not yet well validated; (3) evidence was obtained to identify those measures, scales and patient-reported instruments, for which there is a documented association with relevant outcomes; (4) baseline disease activity is associated with disease activity levels at the end of follow-up; and (5) there was not sufficient evidence relating the added benefit of MRI or ultrasound over clinical assessments. Most data stemmed from observational studies rather than clinical trials and literature review was supplemented by input from experts. The results served as the basis for the elaboration of the seven recommendations by the experts.Conclusions: The approach based on scientific evidence from the literature as well as on expert input provided sufficient information to derive recommendations on reporting disease activity in RA clinical trials. The methodology, results and conclusions of this project were endorsed by EULAR and the ACR.