This was the cross-sectional epidemiological survey of a general population sample of 2001 men and women whose age >35 years old living in the Khuong Mai precinct, Thanh Xuan district, Ha Noi, Viet Nam. Data on respiratory symptoms, diseases, and risk factors were collected through standardized interview questionnaires. Lung function tests were performed using spirometer analyser ST 300, Japan. Subjects whose FEV1NC value was <70% underwent a bronchodilator test with inhalation of 400mcg of Salbutamol. Results. The prevalence of COPD was 1.53%, 4.15% in smokers, 3.47 in ex-smokers, 0.39 % in non-smokers. The prevalence was 2.73% in men and 0.36% in women. The prevalence of COPD was significantly higher in the male group as smoking habit and tobacco consumption was greater. There was no previous diagnosis of COPD in 94.1 % of cases. 64.7% with mild COPD, 17.6 % of patients with moderate COPD and 17.6% of patients with severe COPD. The prevalence of stage 0 of COPD was 3.9%.
Pulmonary Disease, Chronic Obstructive, Epidemiologic Studies, Vietnam