Coffee and tea consumption and endometrial cancer risk in a population-based study in New Jersey.
We evaluated the role of tea and coffee and substances added (sugar/honey, creamers, and milk) on endometrial cancer risk in a population-based case-control study in six counties in New Jersey, including 417 cases and 395 controls. Multivariate odds ratios (OR) and 95% confidence intervals (CI) were computed using unconditional logistic regression. There was a moderate inverse association with coffee consumption, with an adjusted OR of 0.65 (95% CI: 0.36-1.17) for women who reported more than two cups/day of coffee compared to none. Tea consumption appeared to increase risk (OR: 1.93; 95% CI: 1.08-3.45), but after including the variables sugar/honey and cream/milk added to tea in the model, the risk estimate was attenuated and no longer statistically significant (OR: 1.77; 95% CI: 0.96-3.28 for those consuming more than one cup/day of tea compared to nonusers). There was a suggestion of a decreased risk associated with green tea, but the confidence interval included one (adjusted OR for one or more cups/week vs. none: 0.75; 95% CI: 0.48-1.18). We found an association with adding sugar/honey to tea, with those adding two or more teaspoons/cup having an OR of 2.66 (95% CI: 1.42-4.98; p for trend <0.01) after adjusting for relevant confounders. For sugar/honey added to coffee the corresponding OR was 1.43 (95% CI: 0.81-2.55). Our results indicate that sugars and milk/cream added to coffee and tea should be considered in future studies evaluating coffee and tea and endometrial cancer risk.
Bandera
Elisa V
EV
The Cancer Institute of New Jersey, Robert Wood Johnson Medical School, New Brunswick, NJ 08903, USA. elisa.bandera@umdnj.edu
Williams-King
Melony G
MG
Sima
Camelia
C
Bayuga-Miller
Sharon
S
Pulick
Katherine
K
Wilcox
Homer
H
Zauber
Ann G
AG
Olson
Sara H
SH
D016022:Case-Control Studies; D003069:Coffee / Q000009:adverse effects*; D003611:Dairy Products / Q000009:adverse effects; D016889:Endometrial Neoplasms / Q000453:epidemiology*; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D009515:New Jersey; D016017:Odds Ratio; D012307:Risk Factors; D013549:Sweetening Agents / Q000009:adverse effects; D013662:Tea / Q000009:adverse effects*
D003069:Coffee; D013549:Sweetening Agents; D013662:Tea
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