Journal
ASIAN PACIFIC JOURNAL OF CANCER PREVENTION
Volume 14, Issue 3, Pages 1691-1695Publisher
ASIAN PACIFIC ORGANIZATION CANCER PREVENTION
DOI: 10.7314/APJCP.2013.14.3.1691
Keywords
Tea consumption; renal cell carcinoma; meta-analysis; epidemiological studies
Categories
Funding
- National Key Clinical Specialty Construction Project of China
- Health sector scientific research special project [201002010]
- Combination of traditional Chinese and Western medicine key disciplines of Zhejiang Province [2012-XK-A23]
- Key medical disciplines of Zhejiang province
- Zhejiang Provincial Natural Science Foundation of China [Z2090356, LY12H05006]
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Objective: To evaluate the association between tea consumption and the risk of renal cell carcinoma. Methods: We searched PubMed, Web of Science and Scopus between 1970 and November 2012. Two evaluators independently reviewed and selected articles based on predetermined selection criteria. Results: Twelve epidemiological studies (ten case-control studies and two cohort studies) were included in the final analysis. In a meta-analysis of all included studies, when compared with the lowest level of tea consumption, the overall relative risk (RR) of renal cell carcinoma for the highest level of tea consumption was 1.03 (95% confidence interval [CI] 0.89-1.21). In subgroup meta-analyses by study design, there was no significant association between tea consumption and renal cell carcinoma risk in ten case-control studies using adjusted data (RR=1.08, 95% CI 0.84-1.40). Furthermore, there was no significant association in two cohort studies using adjusted data (RR=0.95, 95% CI 0.81-1.12). Conclusion: Our findings do not support the conclusion that tea consumption is related to decreased risk of renal cell carcinoma. Further prospective cohort studies are required.
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