Abstract:
Objective To investigate the prevalence of chronic obstructive pulmonary disease (COPD) and its influencing factors among residents aged 40 years and older in Hebei province, and to provide a reference for the development of local COPD prevention and control strategies.
Methods Study participants were 6 600 permanent residents aged 40 years and older recruited from urban/rural communities of 11 county-level COPD surveillance sites (counties/districts) in Hebei province using multistage random sampling. Face-to-face interviews with a standardized questionnaire developed by the Chinese Center for Disease Control and Prevention, physical examinations, and pulmonary function tests were conducted among the participants from July 2019 to May 2020. The prevalence of COPD was estimated using complex weighting adjustments, and a multivariate unconditional logistic regression model was used to analyze the main factors influencing COPD among the participants.
Results Of the 6 228 participants finally included in the analysis, 565 cases of COPD were identified. After complex weighting, the prevalence of COPD was 9.10%. Multivariate survey logistic regression analysis showed that age ≥50 years, current smoking, previous smoking history, history of respiratory diseases, family history of respiratory diseases, and chronic respiratory symptoms were risk factors for COPD in the participants; while, female gender, ethnic minority, and residence in central and southern Hebei province were protective factors against COPD.
Conclusions The prevalence of COPD among residents aged 40 years and older in Hebei province is relatively low. Gender, age, ethnicity, geographic region, smoking status, history of respiratory diseases, family history of respiratory diseases, and chronic respiratory symptoms are the main influencing factors of COPD among residents of the province.
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