title: Socioeconomic and employment status of patients with rheumatoid arthritis in Korea.
abstract: OBJECTIVE
  This study investigates the prevalence of rheumatoid arthritis (RA) by gender and socio-economic characteristics. It also explores the differences in the employment status between RA patients and the general population without RA in Korea.
  
  
  METHODS
  We analyzed data from the Fourth Korea National Health and Nutrition Examination Survey (KNHANES IV) conducted from 2007 to 2009. Prevalence rates were estimated for female and male patients with RA in terms of age, residence, education, income level, and occupation type. The female respondents aged 45 to 64 were divided into the RA population and the non-RA population in order to compare the employment status between the two groups.
  
  
  RESULTS
  The annual physician-diagnosed RA prevalence rate was 1.45%. The prevalence rate was 2.27% for women and 0.62% for men. Individuals with RA had a significantly lower employment rate than individuals without RA (41.7 vs. 68.1%). The main reason for non-employment among RA patients was health-related problems (47.1%). There was statistically significant difference in employment type among the two groups. The experience rates for sick leave and sick-in-bed due to RA were 1.7 and 3.9%, respectively.
  
  
  CONCLUSIONS
  Middle- and old-aged women accounted for the majority of the Korean RA population, which had a significant lower employment rate compared to the population without RA for both sexes. RA resulted in considerable productivity loss in Korea.
authors.affiliation: Graduate School of Clinical Pharmacy, Sookmyung Women's University, Seoul, Korea.
authors.forename: Jeong-Mi
authors.initials: JM
authors.lastname: Kwon
authors.forename: Jinnie
authors.initials: J
authors.lastname: Rhee
authors.forename: Hyemin
authors.initials: H
authors.lastname: Ku
authors.forename: Eui-Kyung
authors.initials: EK
authors.lastname: Lee