• Department of General Practice, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China;
LIAOXiao-yang, Email: 625880796@qq.com
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Objective To investigate the prevalence and risk factors for chronic obstructive pulmonary disease (COPD) in Dayi County of Chengdu. Methods Randomly cluster sampled residents between 40 and 70 years of age from two natural villages in the rural communities from February to December, 2010 were included in our study. We used questionnaire survey, physical examination and portable spirometry to collect data. Post-bronchodilator forced expiratory volume in 1 second/forced vital capacity of less than 70% was defined as the diagnostic criterion of COPD. Univariate analysis and logistic regression mode were used to define the risk factors. Results A total of 1 017 residents were enrolled in this survey, and 782 participants were valid for analysis, with a valid response rate of 76.89%. There were 330 males and 452 females, with an average age of (51.97±8.17) years old. The overall prevalence of COPD was 10.61%. After population standardization, the prevalence rate was 12.37%, and the overall prevalence increased with increment of age. The prevalence in male (13.33%) was higher than that in female (8.62%) with significant difference (P<0.01) and the prevalence increased with age. Univariate analysis showed that sex, age, education level, smoking and amount of smoking (pack-years) were the risk factors for COPD with significant difference. Logistic regression analysis showed that age, amount of smoking (pack-years) were the main risk factors for COPD. Conclusion COPD is highly prevalent in Dayi County of Chengdu and it is important to prevent COPD by controlling smoking and improving education level.

Citation: PENGDa-qing, LIAOXiao-yang, LEIYi, LUOFeng-ming, SUQiao-li, ZOUChuan, WANGDuo-ning. Epidemic Situation and Risk Factors of Chronic Obstructive Pulmonary Disease among Rural Residents in Dayi County of Chengdu. West China Medical Journal, 2014, 29(8): 1435-1438. doi: 10.7507/1002-0179.20140442 Copy

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