RESUMEN
INTRODUCTION: Family physicians are often the first healthcare providers to encounter patients with rheumatoid arthritis (RA) in Nigeria, given the paucity of rheumatology services nationwide. This study aimed to assess and address the knowledge gap regarding RA among family physicians in Nigeria. METHODS: A cross-sectional survey involving 609 family physicians from all six geopolitical zones of Nigeria was conducted in October 2022. Pre-intervention questionnaires were administered to assess the participants' knowledge of RA. An investigator-led PowerPoint presentation on RA was then delivered as an intervention, followed by the same participants completing post-intervention questionnaires to evaluate knowledge improvement. Data were analyzed using the Statistical Package for Social Science, version 25. RESULTS: The mean age of participants was 42 ± 15 years, predominantly male (63.9%). The median pre-intervention knowledge score was 3.2 (IQR: 2.0-4.5), with 77.0% scoring <5. After the intervention, the median score significantly improved to 7.1 (IQR: 4.3-8.6) (p = .001), with 62.6% scoring >7. Significant improvements were observed in several knowledge areas where gaps existed pre-intervention, including the understanding that NSAIDs are not the mainstay of management (p < .001), the effectiveness of glucosamine and chondroitin sulfate (p < .001), confidence in diagnosing RA (p = .016), the recognition of joint deformities as a characteristic feature (p < .001), and the understanding that rheumatoid factor is not definitive for diagnosis (p < .001). CONCLUSION: This study highlights the importance of interventions in closing the knowledge gap about RA diagnosis and management. We recommend the implementation of a comprehensive approach to rheumatology education and services by policymakers.