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Table 2 Summary of pooled odds ratios (ORs)for bladder cancer by sex, geographical region, and tea type

From: Tea consumption and risk of bladder cancer: a meta-analysis

Subgroup Number of studies Pooled OR Q-test for heterogeneity Egger test Begg test
(95% CI) P-value (I2score) P-value P-value
All studies 23 0.94 (0.85, 1.04) 0.103 (28.3%) 0.518 0.267
Sex
Men 10 1.03 (0.91, 1.14) 0.534 (0.0%) 0.446 0.348
Women 9 0.85 (0.69, 1.01) 0.461 (0.0%) 0.638 0.348
Geographical region
Asia 6 0.85 (0.69, 1.00) 0.784 (0.0%) 0.360 0.348
Europe 7 0.92 (0.77, 1.08) 0.841 (0.0%) 0.789 0.881
Uruguay 1 4.10 (0.00, 8.20) - - -
US/Canada 9 1.02 (0.83, 1.21) 0.008 (61.2%) 0.723 0.835
Tea type
Green tea 5 0.97 (0.73, 1.21) 0.793 (0.0%) 0.377 0.221
Black tea 7 0.79 (0.59, 0.79) 0.176 (33.1%) 0.381 0.764