Prevalence and Risk Factors for COPD in an Urbanizing Rural Area in Western China: A Cross-Sectional Study.

Purpose: To investigate the prevalence and risk factors for chronic obstructive pulmonary disease (COPD) in a rural area in western China with severe air pollution.

Patients And Methods: 10% of local residents aged 40 years and above were included using a convenience sampling method. This was a cross-sectional study.