Alcohol drinking and renal cell carcinoma in Canadian men and women.
BACKGROUND
Epidemiologic studies have reported that moderate alcohol consumption is inversely associated with the risk of renal cell carcinoma (RCC), but sex-specific results are inconsistent. The present study examines the association between alcohol intake and the risk of RCC among men and women.


METHODS
Mailed questionnaires were completed by 1138 newly diagnosed, histologically confirmed RCC cases and 5039 population controls between 1994 and 1997 in eight Canadian provinces. A food frequency questionnaire provided data on eating habits and alcohol consumption 2 years before data collection. Other information included socio-economic status, lifestyle habits, alcohol use, and diet. Odds ratios (ORs) and 95% confidence intervals (CIs) were derived through unconditional logistic regression.


RESULTS
Total alcohol intake was inversely associated with RCC in men and in women; the OR for the highest intake group (> or =22.3 g/day among men and > or =7.9 g/day among women) versus the non-drinkers was 0.7 (95% CI, 0.5-0.9) for both sexes. Analysis of menopausal status produced ORs for the highest intake group versus the non-drinkers of 1.2 (95% CI, 0.7-2.1) among premenopausal women and 0.6 (95% CI, 0.4-0.9) among postmenopausal women. Smoking and obesity were not important effect modifiers.


CONCLUSIONS
Moderate alcohol consumption may be associated with a decreased risk of RCC in men and in women (mainly postmenopausal women).
Hu
Jinfu
J
Evidence and Risk Assessment Division, Centre for Chronic Disease Prevention and Control, Public Health Agency of Canada, 120 Colonnade Road, AL 6701A, Ottawa, Ontario, Canada. Jinfu_Hu@phac-aspc.gc.ca
Chen
Yue
Y
Mao
Yang
Y
Desmeules
Marie
M
Mery
Les
L
D000328:Adult; D000368:Aged; D000428:Alcohol Drinking / Q000453:epidemiology*; D002170:Canada / Q000453:epidemiology; D002292:Carcinoma, Renal Cell / Q000453:epidemiology*; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D012307:Risk Factors; D011795:Surveys and Questionnaires