Genetic Polymorphisms in the RAD51 Gene with a Risk of Head and Neck Cancer and Esophageal Cancer: A Meta-Analysis

Table 3

Results of overall and subgroup analyses for rs1801320.

	No	C versus G			CC versus GG			CG versus GG			CC+CG versus GG			CC versus CG+GG
		OR	95% CI		OR	(95% CI)		OR	(95% CI)		OR	(95% CI)		OR	(95% CI)
Overall	10	1.32	1.03-1.71	0.032	1.34	0.69-2.61	0.388	1.50	1.03-2.19	0.033	1.44	1.05-1.99	0.026	1.15	0.57-2.34	0.696
PCR-RFLP	7	1.52	1.15-2.02	0.004	1.50	0.71-3.16	0.287	1.84	1.19-2.86	0.007	1.74	1.20-2.51	0.003	1.26	0.56-2.83	0.572
PCR	2	0.81	0.50-1.31	0.383	0.99	0.14-6.84	0.991	0.77	0.45-1.30	0.326	0.78	0.47-1.31	0.344	1.01	0.15-6.97	0.993
Caucasian	5	1.13	0.89-1.43	0.316	0.80	0.21-3.02	0.740	1.26	0.70-2.29	0.445	1.20	0.77-1.87	0.417	0.72	0.16-3.31	0.675
Asian	4	1.89	1.16-3.08	0.011	2.20	1.30-3.74	0.003	2.06	1.13-3.76	0.018	2.06	1.17-3.64	0.012	1.89	1.12-3.19	0.018
Large sample	5	1.41	1.02-1.96	0.040	1.18	0.45-3.06	0.741	1.75	1.01-3.01	0.045	1.61	1.04-2.51	0.033	0.98	0.35-2.80	0.976
Small sample	5	1.20	0.74-1.94	0.460	1.82	0.72-4.60	0.205	1.24	0.74-2.07	0.414	1.24	0.73-2.10	0.420	1.64	0.65-4.14	0.292
HNC	7	1.15	0.93-1.43	0.188	0.92	0.32-2.67	0.883	1.26	0.81-1.96	0.301	1.22	0.87-1.71	0.255	0.81	0.25-2.62	0.729
EC	3	2.07	1.01-4.25	0.048	2.08	1.17-3.71	0.013	2.38	0.96-5.89	0.060	2.31	1.00-5.35	0.050	1.78	1.00-3.15	0.049