Associations of Tobacco Use and Alcohol Drinking with Laryngeal and Hypopharyngeal Cancer Risks among Men in Karunagappally, Kerala, India -Karunagappally Cohort Study
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Background: From among a cohort of 65,553 men aged 30-84 in Karunagappally Taluk, Kerala, India, 52hypopharyngeal cancer cases and 85 laryngeal cancer cases were identified by the Karunagappally Cancer Registryduring the period between 1990 and 2009.Methods: We conduct Poisson regression analysis of grouped data, taking into account age and education.Results: This study showed that the incidence rates of cancer soft heh ypopharynxand the IarynxwerestrongIyrelated to the number of bidis smoked a day(P<0.001 for both hypopharyngeal and Iaryngeal cancers) and durationof bidi smoking(P=0.009; <0.001). Laryngeal cancer risk wassignificantly increased by bidi smoking (P<0.001),cigarette smoking (P=0.013) and regular alcohol use (P=0.005).Conclusion: The present study, the first cohort study to examine the association of hypopharyngeal and laryngealcancer incidence rates with bidi smoking in South Asia, clearly showed dose-response relationships between thosecancer risks and bidi smoking; larger amounts of bidi smoked a day and longer durations of bidi smoking increasedthe incidence rates of those cancers. Tobacco chewing was found not related to the risk of hypopharynx or larynxcancer.
- Public Library of Scienceの論文
- 2013-08-28
Public Library of Science | 論文
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