Table 1.

OGG1 c.923G>A genotype counts and association statistics for the six colorectal case–control studies*

Study	Case					Control					OR (95% CI)	P
	AA	AG	GG	Total	MAF	AA	AG	GG	Total	MAF
England/Wales	1	39	3626	3666	0.0056	0	72	6068	6140	0.0059	0.93 (0.64 to 1.36)	.71
Scotland	0	21	2031	2052	0.0051	0	23	1981	2004	0.0057	0.90 (0.52 to 1.56)	.72
Holland	0	6	405	411	0.0073	0	5	384	389	0.0064	1.07 (0.43 to 2.64)	.89
Spain	0	4	272	276	0.0072	0	5	279	284	0.0088	0.91 (0.35 to 2.38)	.84
Portugal	0	4	195	199	0.0101	0	6	180	186	0.0161	0.75 (0.29 to 1.95)	.56
Germany	0	3	249	252	0.0060	0	16	1071	1087	0.0074	1.17 (0.47 to 2.92)	.74
Combined	1	77	6778	6856	0.0058	0	127	9963	10090	0.0063	0.94 (0.72 to 1.21)	.61

* Odds ratios and P values were generated using logistic regression. For the combined analysis, odds ratio and P value shown are from fixed-effects meta-analysis.