Prevalence of Chronic Obstructive Pulmonary Disease in China

First Affiliated Hospital of Guangzhou Medical University · State Key Laboratory of Respiratory Disease · +17 more institutions

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Abstract

Objectives

To obtain the COPD prevalence in China through a large-population, spirometry-based, cross-sectional survey of COPD.

Methods

Urban and rural population-based cluster samples were randomly selected from seven provinces/cities. All residents 40 years of age or older in the selected clusters were interviewed with a standardized questionnaire revised from the international BOLD (Burden of Obstructive Lung Diseases) study. Spirometry was performed on all eligible participants. Patients with airflow limitation (FEV(1)/FVC

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