Content validity testing of the INTERMED Self-Assessment in a sample of adults with rheumatoid arthritis and rheumatology healthcare providers.

"CONFLICT OF INTEREST STATEMENT The authors declare no conflicts of interest."

"The authors would like to acknowledge the Rheum4U programme participants and research team for facilitating recruitment for this study. The Rheum4U programme was established by Dianne Mosher, Deborah Marshall, Claire Barber, Susanne Benseler, Marinka Twilt and Paul MacMullan. Inelda Gjata provided project management support and Martina Stevenson provided project support to facilitate recruitment for the current study. Rheum4U receives the support of the EPICORE Centre and the Consultation and Research Services Platform at The Alberta SPOR SUPPORT Unit in Data management and statistical services. Clinical clerks, front desk staff, allied health professionals and registered nurses at the Richmond Road Diagnostic and Treatment Center and South Health Campus Hospital helped with patient recruitment for the programme. Arthritis Society Canada and Arthritis Research Canada also assisted in patient recruitment. The authors would like to thank the participating physicians and patients who contributed data to the study, including those at the Northeast Rheumatology Clinic and the Associates Clinic in Calgary, Alberta, and the Kaye Rheumatology Clinic in Edmonton, Alberta. Funding for this study was from the Canadian Institutes of Health Research (CIHR)–Institute of Musculoskeletal Health and Arthritis."