Risk factors of chronic cough in China: a systematic review and meta-analysis.

The study indicated that allergy, nasal/sinusitis diseases, family history of allergy, family history of chronic respiratory diseases, exposure to pollutants, passive smoking, and exposure to pets were risk factors for chronic cough in China. Although several potential risk factors (e.g.: sex and BMI) were not explore for the limited information in the included articles, this paper provides useful epidemiological information for managing chronic cough not only in China but around the world.