National trends in the prevalence of rheumatoid arthritis and osteoarthritis in South Korea

  Patient selection and data collection This study used data from the Korea National Health and Nutrition Examination Survey (KNHANES), conducted between 1998 and 2021 by the Korea Centers for Disease Control and Prevention Agency (KDCA).10,11. The study population included adults aged ≥ 19 years and data collected included information on age, gender, place of…