B) Methods: Structured questionnaire was used to evaluate the demographic characteristics such as age, sex, place of residence, smoking, prevalence of asthma based on doctor diagnosis and possible risk factors like crop types, farming period, pesticide usage, indoor cultivation, respiratory protection usage. From 2013 to 2014, total 951 farmers answered the questionnaire.
C) Results: Prevalence of asthma among male farmer was 5.2% and the prevalence among female farmer was 6.0%. Based on 2013 Korean national health and nutrition examination survey, prevalence of asthma among Korean male was 2.7% and the prevalence among female was 4.1%. The odds ratio of asthma for total pesticide use year (more than 20 years) was 2.07(1.20-3.58) and the odds ratio for indoor cultivation was 0.97(0.49-1.90).
D) Conclusions: The prevalence of asthma among farmers was higher than other population in Korea. Pesticide usage is considered as a risk factor of asthma. In further research, exposure measures and work-relatedness measures should be needed.