Polymorphisms in estrogen receptors predict the risk of male infertility: a meta-analysis

Table 2 Stratification analyses of genetic susceptibility of rs2234693 polymorphism to male infertility

Category	Cases/controls	CC vs. TT			CT vs. TT			CC + CT vs. TT			CC vs. CT + TT			C allele vs. T allele
		OR(95% CI)	P ^a	I ²	OR(95% CI)	P ^a	I ²	OR(95% CI)	P ^a	I ²	OR(95% CI)	P ^a	I ²	OR(95% CI)	P ^a	I ²
Total	774/841	0.72(0.54-0.96)	0.282	20.1	0.74(0.58-0.94)	0.533	0	0.73(0.58-0.91)	0.368	7.5	0.90(0.71-1.13)	0.465	0	0.84(0.71-1.01)	0.190	32.8
*RACE*
Asian	368/416	0.61(0.40-0.93)	0.670	0	0.67(0.49-0.93)	0.358	0	0.66(0.49-0.89)	0.593	0	0.83(0.58-1.18)	0.257	22.1	0.78(0.64-0.96)	0.681	0
Caucasian	406/425	0.83(0.46-1.23)	0.175	39.5	0.83(0.57-1.19)	0.460	0	0.81(0.58-1.14)	0.232	30	0.95(0.70-1.29)	0.395	0	0.87(0.64-1.18)	0.103	51.5

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