Tea Drinking and the Risk of Carcinoma of the Urinary Bladder: A Meta-Analysis

Objective. For evaluation of the correlation between tea drinking and the risk of carcinoma of the urinary bladder. Methods. By searching PubMed, Embase, and Cochrane Library databases, the original studies on tea drinking and carcinoma of the urinary bladder risk were collected, the data were extracted, and meta-analysis package 5.2-0 of R language was used for meta-analysis. Results. This study contained 11 researches, composed of 7686 patients and 10320 controls. Tea drinking was not linked to carcinoma of the urinary bladder risk (OR:1.02, 95%CI: 0.95–1.11). Conclusion. Tea drinking may not be linked to carcinoma of the urinary bladder, but more definitive results are needed from higher-quality trials.