Background Rheumatoid arthritis (RA) and Osteoarthritis (OA) are common arthritis in adults, and leading causes of disability. Estimating the prevalence of RA and OA is important for planning health care and public health systems. In South Korea, the Korean National Health Insurance (NHI) database has the medial and prescription claims data for most of Korean people. We evaluated the change of prevalence of RA and OA using NHI database between 2011 and 2014.
Objectives The purpose of this study is to evaluate the prevalence and annual direct medical costs of rheumatoid arthritis and osteoarthritis in Korea.
Methods We used data provided by Korean Health Insurance Research and Assessment agency. Identification of patients with RA and OA was based by main diagnostic code in database. The prevalence of RA and OA was evaluated in adults aged 20 years or older from 2011 to 2014. Annual direct medical costs per patient were also calculated.
Results The prevalence of RA was decreased from 0.74% at 2011 to 0.68% at 2014. On the other hand, that of OA was increased from 7.96% at 2011 to 8.75% at 2014. Annual direct medical costs per patient tended to increase in both RA and OA, but rate of increase was greater in RA. In OA, annual direct medical costs were $226.86 at 2011, and increased up to $239.95 (105.8%). In RA, those were $209.95 at 2011, and increased up to $319.19 (152.0%).
Conclusions The prevalence of RA was decreased, but that of OA was increased in Korea between 2011 and 2014. Annual direct medical costs per patient increased in both RA and OA, but rate of increase was greater in RA.
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Acknowledgement none declared
Disclosure of Interest None declared