Objective: To determine whether Cochrane Musculoskeletal Group (CMSG) systematic reviews and corresponding primary studies of rheumatoid arthritis interventions report and analyze the data needed to assess the effectiveness of interventions in reducing socioeconomic differences in health and/or improving the health of the poor.
Methods: We selected all CMSG reviews on rheumatoid arthritis published since issue 1, 2003. Fourteen reviews were identified; 147 of the 156 primary studies included in these reviews were obtained and assessed.