Jung JH, Lim JH, Bang CH, et al. - Researchers undertook this nationwide cross-sectional study to determine the prevalence of chronic obstructive pulmonary disease (COPD) as well as its link in patients suffering from rheumatoid arthritis (RA) in Korea by gender. They utilized data from the Korea National Health and Nutrition Examination Survey. This analysis involved 12,417 men and 15,878 women. Findings revealed a high prevalence of COPD in RA patients of both genders in Korea. In males but not in females, RA and COPD was significantly likely to be associated.