[Effects of smoking on lung function in populations of Beijing and Guangzhou].
OBJECTIVE
To analyse the relationship between cigarette smoking and lung function in populations of Beijing and Guangzhou.


METHODS
Complete lung function and smoking habit data were recruited from 7983 men and women aged 35-59 in or around Beijing and Guangzhou. Comparisons were made between smokers and never smokers.


RESULTS
The mean values of FEV1/H2, FEF/H2 and FEV1/FVC are all lower in smokers than in never smokers for male smokers, the observed mean value of FEV1/H2 for each age group in smaller than the respective predicted value, and its descending trend with aging is more obvious than the predicted value when re-examination after 2-4 years; furthermore, smokers had higher prevalences of respiratory symptom and COPD.


CONCLUSIONS
Cigarette smoking is harmful to lung function.
Rao
X
X
Guangdong Cardiovascular Institute.
Cai
R
R
Huang
Z
Z
D000328:Adult; D002681:China / Q000453:epidemiology; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008168:Lung / Q000502:physiology*; D008173:Lung Diseases, Obstructive / Q000453:epidemiology / Q000209:etiology; D008297:Male; D008875:Middle Aged; D012129:Respiratory Function Tests; D012907:Smoking / Q000009:adverse effects*