Epidemiological study of chronic obstructive pulmonary disease in the population of Dong Da and Thanh Xuan districts, Hanoi-Vietnam

ABSTRACT

Background: Chronic obstructive pulmonary Disease (COPD) is a devastating lung disease with increasing prevalence, economic and social burden. Worldwide, it ranks as the fourth leading cause of death. Objectives: This study carried out to evaluate the prevalence of COPD in the population of Dong Da and Thanh Xuan districts, Ha Noi City. Methods: This was a cross-sectional epidemiological survey of a general population sample of 1334 men and women whose age was over 35 years old living in Dong Da and Thanh Xuan districts, Ha Noi,Viet Nam. Data on respiratory symptoms, diseases, and risk factors were collected. Lung function tests were performed with Spiroanalyzer ST300 - Japan. Results: The prevalence simple chronic bronchitis was 3.2%, (5.5% in men and 1.06% in women). The prevalence of COPD was 1.7% (in men was 2.8% and 0.7% in women). There was no previous diagnosis of COPD in 94.7% of cases. Subjects who suffered from COPD had mean of age of 62.9 years (min 47, max 81). 21.1% of COPD patients was of stage I stage, 57.9% of COPD patients was of stage II. 5.3% of COPD patients was of stage III, 15.7% of COPD patients was of stage IV. There was no symptom in 36.8% of cases. 78.9% COPD patients smoked, OR of 6.42 [2.01 - 16.6]. 47.3% of them smokes at least 15 packs/year.