HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:
Guest Access | Sign In via User Name/Password

This Article Full Text Free Full Text (PDF) Free Erratum (v129,p216) Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed Alert me to new issues of the journal Add to My Personal Article Archive Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (9) Citing Articles via Google Scholar Google Scholar Articles by Xu, F. Articles by Xu, Y. Search for Related Content PubMed PubMed Citation Articles by Xu, F. Articles by Xu, Y.

Prevalence of Physician-Diagnosed COPD and Its Association With Smoking Among Urban and Rural Residents in Regional Mainland China^*

^* From Nanjing Municipal Center for Disease Control and Prevention (Drs. Yin and Zhang), Nanjing, China; the School of Public Health (Drs. Shen and F. Xu), Nanjing Medical University, Nanjing, China; Department of Epidemiology and Public Health (Dr. Lu), Yale University School of Medicine, New Haven, CT; and NanJing Medical University (Dr. Y. Xu), Nanjing, China.

Correspondence to: Fei Xu, BMed, Nanjing Municipal Center for Disease Control and Prevention, 2 ZiZhuLin, Nanjing, ROC 210003; e-mail: f_xufei{at}hotmail.com

Objectives: To investigate the prevalence of physician-diagnosed COPD and to explore the relationship between the total amount of cigarettes smoked (TACS) and COPD among urban and rural adults in Nanjing, China.

Design: Population-based, cross-sectional study conducted between October 2000 and March 2001.

Setting: Administrative villages (n = 45) randomly selected from three urban districts and two rural counties of Nanjing municipality, Jiangsu province, China, with an overall population of 5.6 million.

Participants: All regular local residents 35 years old (n = 29,319), 67.7% from urban areas and 32.3% from rural areas; 49.7% were men and 50.3% were women.

Results: The response rate of potential participants was 90.1%. The overall prevalence of diagnosed COPD was 5.9%. The prevalence of COPD was significantly higher among men than in women (7.2% vs 4.7%, p = 0.000), while the difference between urban and rural participants was not statistically significant (6.7% vs 4.4%, respectively; p = 0.132). The prevalence of COPD was significantly higher among smokers than nonsmokers. After adjusting for age, gender, area of residence, fuels, heating in winter, ventilation in kitchen, passive smoking, education, occupation, average family income, alcohol drinking, cooking oil, body mass index, and physical activity, a dose-response relationship between COPD and TACS was evident in this population (odds ratio [OR], 1.60; 95% confidence interval [CI], 1.34 to 1. 92; OR, 1.39; 95% CI, 1.13 to 1.70; and OR, 1.24; 95% CI, 1.01 to 1.52 for smokers within upper, middle, and lower TACS levels compared with nonsmokers, respectively).

Conclusions: The overall prevalence of diagnosed COPD (5.9%) among Chinese adults was higher than that (2.5%) estimated by World Health Organization experts, and there was a significant gradient increase in COPD prevalence from the stratum of nonsmokers to the stratum of upper TACS.

Key Words: China • cigarette smoking • COPD • prevalence • total amount of cigarettes smoked

This article has been cited by other articles:

				C. Jiang, G N. Thomas, T. H. Lam, C M. Schooling, W. Zhang, X. Lao, P. Adab, B. Liu, G. M Leung, and K. K. Cheng Cohort Profile: The Guangzhou Biobank Cohort Study, a Guangzhou-Hong Kong-Birmingham collaboration Int. J. Epidemiol., August 1, 2006; 35(4): 844 - 852. [Full Text] [PDF]