[Prevalence of chronic obstructive pulmonary disease among community population aged ≥40 in China: a Meta-analysis on studies published between 1990 and 2014]
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Heling Bao1, Liwen Fang, Linhong Wang
1Institute for Chronic Respiratory Diseases Prevention and Control, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
Objective:
To understand the prevalence of chronic obstructive pulmonary disease (COPD) among the community population aged ≥40 years in China from 1990 to 2014.
Methods:
The studies on the prevalence of COPD among the community population in China published from 1990 to 2014 were retrieved from the following databases: Chinese BioMedical Literature Database (CBM), Chinese Journal Full-text Database (CNKI), Wanfang Database, PubMed and EBSCO. Mantel-Haenszel fixed effect and random effect model and software Stata were used for statistical analysis.
Results:
A total 30 studies were included in the Meta analysis. The pooled prevalence of COPD was 9.9%(95%CI: 8.8%-11.0%). The prevalence was higher in males (13.0%, 95%CI: 11.5%-14.4%) than in females (5.8%, 95% CI: 4.9%-6.6%), and the prevalence of COPD increased with age obviously from 3.2% in age group 40-49 years (95%CI: 2.5%-3.9%) to 20.3% in age group ≥70 years (95%CI: 18.2%-22.4%). The differences in prevalence among different areas had no statistical significance.
Conclusions:
The prevalence of COPD in population aged ≥40 years increased gradually in China in recent 20 years. Obvious heterogeneity was found among the results of the studies due to the different diagnostic standards and sample sizes.
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