Exhaled carbon monoxide and its associations with smoking, indoor household air pollution and chronic respiratory diseases among 512,000 Chinese adults.

ABSTRACT:

Background

Exhaled carbon monoxide (COex) level is positively associated with tobacco smoking and exposure to smoke from biomass/coal burning. Relatively little is known about its determinants in China despite the population having a high prevalence of smoking and use of biomass/coal.

Methods

The China Kadoorie Biobank includes 512,000 participants aged 30-79 years recruited from 10 diverse regions. We used linear regression and logistic regression methods to assess the associations of COex level with smoking, exposures to indoor household air pollution and prevalent chronic respiratory conditions among never smokers, both overall and by seasons, regions and smoking status.

Results

The overall COex level (ppm) was much higher in current smokers than in never smokers (

SUBMITTER: Zhang Q 

PROVIDER: S-EPMC3807615 | biostudies-literature | 2013 Oct

REPOSITORIES: biostudies-literature