Free Paper Presentation : OS-38 ; Increased Prevalence of COPD Among Korean Population: An Analysis of KNHANES II and V = Free Paper Presentation : OS-38 ; Increased Prevalence of COPD Among Korean Population: An Analysis of KNHANES II and V

다국어 초록 (Multilingual Abstract)

Background: COPD is a serious public health problem. Understanding the longitudinal trend of prevalence is important in characterizing the burden of COPD and planning health service planning. Method: We analyzed the prevalence of airflow obstruction between 2001 and 2011 using data from Korean National Health and Nutritional Examination Survey (KNHANES II and V). Airway obstruction was defined by FEV1/FVC ＜ 0.7. The participants aged over 40 years recording less than 0.7 of FEV1/FVC was defined to have COPD. To compare the prevalence of COPD after age and gender standardization, we used the data from the Population and Housing Census, which was conducted by Statistics Korea in 2010. Statistical analyses were performed using SAS version 9.2. Result: Data were acquired from 5,318 subjects, who aged =40 years and underwent spirometry adequately (2001: n=2,217; 2011: n=3,101). The prevalence of COPD increased from 2001 to 2011 (2001: 13.0%, 2011: 13.2%). The prevalence of COPD increased in men, but not in women (2001: men 20.5%, women 6.5%; 2011: men 22.2%, women 6.4%). Interestingly, the prevalence of COPD decreased after age and gender standardization (2001: total 15%, men 22.3%, women 8.3%; 2011: total 12.6%, men 19.6%, women 6.4%).The proportion of ever-smokers increased from 2001 to 2011 (2001: men 79.8%, women 5.2%; 2011: men 82.9%, women 6.3%). On the contrary, the proportion of current smokers decreased from 2001 to 2011 (2001: men 54.1%, women 4.5%; 2011: men 36.7%, women 3.7%). Conclusions: From 2001 to 2011, the prevalence of COPD in Korea has been increased, but it declined after age and gender standardization. This result suggests the burden of COPD increased mainly due to aging of population despite the progressive anti-smoking prevention policies.