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326254
Exposure to environmental tobacco smoke and lung cancer in Chinese populations: A meta-analysis of 30 studies


Tuesday, November 3, 2015 : 12:30 p.m. - 12:50 p.m.

Claire Kim, MPH, Fielding School of Public Health, Department of Epidemiology, University of California, Los Angeles (UCLA), Los Angeles, CA
Jin-Yi Zhou, Department of Non-communicable Chronic Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
Li-Ming Li, MD, School of Public Health Science Studies, Peking University Health Science Center, Beijing, China
Qing-Yi Lu, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA
Ming Wu, Department of Non-communicable Chronic Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
Jin-Kou Zhao, Department of Non-communicable Chronic Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
Zuo-Feng Zhang, PhD MD, Fielding School of Public Health, Department of Epidemiology, University of California, Los Angeles (UCLA), Los Angeles, CA
Audio (mp3) recording Recorded Presentation (mp4)
Background     Tobacco smoking is a major public health problem in China, affecting not only the 350 million active smokers but also the 500 million passive smokers. Previous studies on the association between exposure to environmental tobacco smoke (ETS) and lung cancer risk in Chinese populations vary in their reported estimates of association. The aim of the current study was to provide an updated and comprehensive meta-analysis of all published studies on the association between ETS exposure and lung cancer risk in the Chinese population.

Methods           We conducted a meta-analysis of 30 studies involving a total of 7,318 cases and 14,139 controls. The pooled odds ratio (OR) and its 95% confidence interval (CI) were calculated using both fixed- and random-effects models. Tests of heterogeneity and stratified analyses were performed by study design, study size, location, publication date, and language of publication.

Results             The overall pooled OR for the association between exposure to ETS and lung cancer risk among Chinese individuals was 1.49 (95% CI: 1.32-1.68) using the random-effects model. The estimate of association was higher for studies published in Chinese (OR=1.83, 95% CI: 1.39-2.41) than for studies published in English (OR=1.40, 95% CI: 1.23-1.61).

Conclusion      The pooled ORs from comparable meta-analyses of studies conducted among Western populations typically do not exceed 1.4. Therefore, exposure to ETS might be a stronger risk factor for lung cancer in China than in Western countries. China will benefit greatly from stronger public health policies and health education efforts aimed toward reducing its people’s exposure to tobacco smoke.

Learning Areas:

Environmental health sciences
Epidemiology

Learning Objectives:
Assess the association between environmental tobacco smoke exposure and lung cancer risk in Chinese populations.

Keyword(s): Cancer, Tobacco Control

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: I am writing a doctoral dissertation on the epidemiology of environmental tobacco smoke exposure and lung cancer. I have published a paper on this topic as first author in the International Journal of Cancer.
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.

Back to: 4239.0: International environmental health issues