Objective To investigate the prevalence and influencing factors of chronic obstructive pulmonary disease (COPD) among middle-aged and elderly residents in Jiangxi province, and to provide references for implementing appropriate interventions among the population.
Methods Using stratified cluster random sampling method, we surveyed 5 874 residents 40 years old and older in Jiujiang city, Nanchang city and Ganzhou city of Jiangxi province with a questionnaire interview and pulmonary function examination from January to December 2016.
Results Among all the participants, 624 were identified with COPD and the COPD prevalence rate was 10.62%. The results multivariate unconditional logistic regression analysis revealed that male, aged ≥ 50 years, smoking, with a smoking index of ≥ 401, passive smoking, cooking history, history of occupational dust exposure, and use of liquified gas, coal and firewood as cooking materials in recent 10 years were risk factors for COPD; while female, living in central and northern region of Jiangxi province, and having a ventilator or a range hood in the home kitchen were protective factors against COPD among the population.
Conclusion The prevalence rate of COPD is high and mainly influenced by sex, age, living area, smoking, smoking index, passive smoking, cooking history, cooking materials used in recent 10 years, whether having ventilation equipment in home kitchen, and history of occupational exposure to dust among middle-aged and elderly residents in Jiangxi province.
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