Objective: To evaluate associations between tea consumption, alcohol drinking and physical activity andbreast cancer risk among Chinese females. Methods: Three English databases (PubMed, ScienceDirect andWiley) and three Chinese databases (CNKI, WanFang and VIP) were independently searched by 2 reviewersup to December 2012, complemented by manual searches. The quality of included studies was assessed withthe Newcastle-Ottawa Scale items. Random-effects models were used to estimate the pooled odds ratios (ORs)and 95% confidence intervals (CIs). Potential publication bias was estimated through Egger’s and Begg’s tests.Heterogeneity between studies was evaluated with I2 statistics. Results: Thirty-nine studies involving 13,204breast cancer cases and 87,248 controls were identified. Compared with non-drinkers, regular tea drinkers haddecreased risk (OR=0.79, 95%CIs: 0.65-0.95; I2=84.9%; N=16). An inverse association was also found betweenregular physical activity and breast cancer risk (OR=0.73, 95%CIs: 0.63-0.85; I2=77.3%; N=15). However,there was no significant association between alcohol drinking and breast cancer risk (OR=0.85, 95%CIs: 0.72-1.02; I2=63.8%; N=26). Most of the results from the subgroup analysis were consistent with the main results. Conclusion: Tea consumption and physical activity are significantly associated with a decreased risk of breastcancer in Chinese females. However, alcohol drinking may not be associated with any elevation of risk.
(2013). Tea Consumption, Alcohol Drinking and Physical Activity Associations with Breast Cancer Risk among Chinese Females: a Systematic Review and Meta-analysis. Asian Pacific Journal of Cancer Prevention, 14(12), 7543-7550.
MLA
. "Tea Consumption, Alcohol Drinking and Physical Activity Associations with Breast Cancer Risk among Chinese Females: a Systematic Review and Meta-analysis". Asian Pacific Journal of Cancer Prevention, 14, 12, 2013, 7543-7550.
HARVARD
(2013). 'Tea Consumption, Alcohol Drinking and Physical Activity Associations with Breast Cancer Risk among Chinese Females: a Systematic Review and Meta-analysis', Asian Pacific Journal of Cancer Prevention, 14(12), pp. 7543-7550.
VANCOUVER
Tea Consumption, Alcohol Drinking and Physical Activity Associations with Breast Cancer Risk among Chinese Females: a Systematic Review and Meta-analysis. Asian Pacific Journal of Cancer Prevention, 2013; 14(12): 7543-7550.