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Title: Cigarette smoking and risk of prostate cancer among Singapore Chinese
Authors: Butler, L.M.
Wang, R.
Wong, A.S.
Koh, W.-P. 
Yu, M.C.
Keywords: Cigarette smoking
Prospective study
Prostate cancer
Singapore Chinese
Issue Date: Dec-2009
Citation: Butler, L.M., Wang, R., Wong, A.S., Koh, W.-P., Yu, M.C. (2009-12). Cigarette smoking and risk of prostate cancer among Singapore Chinese. Cancer Causes and Control 20 (10) : 1967-1974. ScholarBank@NUS Repository.
Abstract: Prospective epidemiologic studies conducted in Western populations support an association between current smoking and aggressive subtypes of prostate cancer. In Singapore, where prostate-specific antigen is not used for population-wide screening, prostate cancer incidence has tripled within the past two decades. Using Cox regression methods, we examined the relationship between smoking and prostate cancer established between 1993 and 1998 in a cohort of 27,293 Singapore Chinese men. As of December 2006, 250 incident prostate cancer cases were diagnosed. In our cohort, 42.2% reported never smoking cigarettes, 15.7% quit over 5 years ago (long-term former), 5.7% quit within the past 5 years (recent former), and 36.4% were current smokers. From multivariable models, we observed no association with smoking status, age at starting to smoke, years smoked, or number of cigarettes per day. Among recent former and current smokers combined, we observed a small positive association for earlier age at starting to smoke that was somewhat stronger for nonadvanced disease (hazard ratio = 1.63, 95% confidence interval: 0.85, 3.12, for
Source Title: Cancer Causes and Control
ISSN: 09575243
DOI: 10.1007/s10552-009-9391-2
Appears in Collections:Staff Publications

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