Green tea consumption and the risk of endometrial cancer: a population-based case-control study in urban Shanghai.
- Author:
Jing GAO
1
;
Yong-bing XIANG
;
Wang-hong XU
;
Chang-xia SHAO
;
Zhi-xian RUAN
;
Jia-rong CHENG
;
Xiao-ou SHU
;
Yu-tang GAO
Author Information
- Publication Type:Journal Article
- MeSH: Adult; Aged; Case-Control Studies; China; epidemiology; Endometrial Neoplasms; epidemiology; prevention & control; Female; Humans; Logistic Models; Middle Aged; Risk Factors; Surveys and Questionnaires; Tea; Urban Health
- From: Chinese Journal of Epidemiology 2005;26(5):323-327
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo assess the effect of tea consumption on the risk of endometrial cancer.
METHODSIn a population based case-control study conducted in urban Shanghai, face-to-face interviews were completed for 995 incidence cases aged 30 - 69 from January 1997 to December 2002 and 1087 controls that frequency-matched to cases on age. Unconditional logistic model was used for analysis.
RESULTSAn inverse association was observed in tea drinking and endometrial cancer risk. Compared to non-tea drinkers, regular tea drinkers had reduced risk of endometrial cancer (OR = 0.74; 95% CI: 0.54 - 1.01) in premenopausal women. Green tea had a protective effect on endometrial cancer among non-smoking or non-alcohol drinking women (OR = 0.77, P = 0.0199) and the ORs reduced with the increasing concentration of tea being served (P for trend = 0.0493). The multivariate ORs for drinking green tea < 7 times/week and >or= 7 times/week were 0.90 (95% CI: 0.53 - 1.54) and 0.76 (95% CI: 0.60 - 0.95) with the trend test of P = 0.0163.
CONCLUSIONTea drinking, with green tea in particurlar, seemed to have weak but inverse association with endometrial cancer risk, but this effect of protection might only limit to premenopausal women.
