Published in:
01-09-2011 | Original paper
An examination of male and female odds ratios by BMI, cigarette smoking, and alcohol consumption for cancers of the oral cavity, pharynx, and larynx in pooled data from 15 case–control studies
Authors:
Jay H. Lubin, Joshua Muscat, Mia M. Gaudet, Andrew F. Olshan, Maria Paula Curado, Luigino Dal Maso, Victor Wünsch-Filho, Erich M. Sturgis, Neonilia Szeszenia-Dabrowska, Xavier Castellsague, Zuo-Feng Zhang, Elaine Smith, Leticia Fernandez, Elena Matos, Silvia Franceschi, Eleonora Fabianova, Peter Rudnai, Mark P. Purdue, Dana Mates, Qingyi Wei, Rolando Herrero, Karl Kelsey, Hal Morgenstern, Oxana Shangina, Sergio Koifman, Jolanta Lissowska, Fabio Levi, Alexander W. Daudt, Jose Eluf Neto, Chu Chen, Philip Lazarus, Deborah M. Winn, Stephen M. Schwartz, Paolo Boffetta, Paul Brennan, Ana Menezes, Carlo La Vecchia, Michael McClean, Renato Talamini, Thangarajan Rajkumar, Richard B. Hayes, Mia Hashibe
Published in:
Cancer Causes & Control
|
Issue 9/2011
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Abstract
Background
Greater tobacco smoking and alcohol consumption and lower body mass index (BMI) increase odds ratios (OR) for oral cavity, oropharyngeal, hypopharyngeal, and laryngeal cancers; however, there are no comprehensive sex-specific comparisons of ORs for these factors.
Methods
We analyzed 2,441 oral cavity (925 women and 1,516 men), 2,297 oropharynx (564 women and 1,733 men), 508 hypopharynx (96 women and 412 men), and 1,740 larynx (237 women and 1,503 men) cases from the INHANCE consortium of 15 head and neck cancer case–control studies. Controls numbered from 7,604 to 13,829 subjects, depending on analysis. Analyses fitted linear-exponential excess ORs models.
Results
ORs were increased in underweight (<18.5 BMI) relative to normal weight (18.5–24.9) and reduced in overweight and obese categories (≥25 BMI) for all sites and were homogeneous by sex. ORs by smoking and drinking in women compared with men were significantly greater for oropharyngeal cancer (p < 0.01 for both factors), suggestive for hypopharyngeal cancer (p = 0.05 and p = 0.06, respectively), but homogeneous for oral cavity (p = 0.56 and p = 0.64) and laryngeal (p = 0.18 and p = 0.72) cancers.
Conclusions
The extent that OR modifications of smoking and drinking by sex for oropharyngeal and, possibly, hypopharyngeal cancers represent true associations, or derive from unmeasured confounders or unobserved sex-related disease subtypes (e.g., human papillomavirus–positive oropharyngeal cancer) remains to be clarified.