Table 2. Results from meta-analysis of −607 C>A and cancer risk.

		AA vs. CC		CA vs. CC			CA/AA vs. CC		AA vs. CC/CA
	N	OR	Ph	OR		Ph	OR	Ph	OR	Ph
Total	23	1.11(0.92, 1.33)	0.013	1.19(1.04, 1.37)*		0.033	1.17(1.01, 1.34)*	0.007	0.99(0.85, 1.15)	0.032
Cancer Types
GC	4	1.41(0.36, 5.45)	<0.001	1.45(0.97, 2.18)		0.525	1.41(0.67, 2.95)	0.018	1.12(0.33, 3.81)	<0.001
NC	4	1.31(0.96, 1.77)	0.759	1.33(1.03, 1.72)*		0.704	1.32(1.04, 1.69)*	0.823	1.08(0.84, 1.39)	0.547
GUC	4	0.87(0.67, 1.12)	0.363	0.86(0.63, 1.16)		0.068	0.85(0.64, 1.13)	0.076	0.94(0.77, 1.15)	0.914
GIC	6	1.12(0.88, 1.42)	0.648	1.32(1.08, 1.63)*		0.327	1.25(1.05, 1.50)*	0.458	0.95(0.78, 1.17)	0.681
BC	2	1.33(0.80, 2.22)	0.438	1.17(0.81, 1.68)		0.532	1.20(0.85, 1.70)	0.784	1.23(0.72, 2.10)	0.274
Others	3	1.26(0.61, 2.62)	0.080	1.43(0.85, 2.42)		0.100	1.37(0.79, 2.39)	0.055	0.98(0.62, 1.56)	0.277
Ethnicities
Asian	17	1.15(0.90, 1.46)	0.003	1.15(0.98, 1.34)	0.099		1.15(0.97, 1.37)	0.010	1.04(0.85, 1.25)	0.011
Caucasian	5	1.02(0.78, 1.34)	0.473	1.29(0.91, 1.85)	0.041		1.20(0.89, 1.62)	0.083	0.89(0.70, 1.14)	0.620
African	1	1.06(0.56, 2.03)	N/A	1.58(0.95, 2.62)	N/A		1.42(0.88, 2.30)	N/A	0.79(0.46, 1.38)	N/A
Source of Controls
PB	14	1.01(0.83, 1.23)	0.196	1.18(1.01, 1.37)*	0.189		1.12(0.97, 1.29)	0.190	0.91(0.76, 1.09)	0.154
HB	9	1.33(0.92, 1.91)	0.009	1.25(0.94, 1.65)	0.018		1.30(0.96, 1.75)	0.002	1.14(0.87, 1.48)	0.044
Sample Size
Largea	4	1.05(0.77, 1.42)	0.192	1.05(0.78, 1.42)	0.080		1.05(0.78, 1.41)	0.063	1.01(0.83, 1.22)	0.750
Smallb	19	1.14(0.91, 1.42)	0.011	1.24(1.06, 1.45)*	0.086		1.21(1.03, 1.42)*	0.019	0.99(0.82, 1.21)	0.011

GC: Gynecological cancer; NC: Nasopharyngeal carcinoma; GUC: Genitourinary system cancer; GIC: Gastrointestinal cancer; BC: Breast cancer; N: number of studies included; OR: odds ratio; P_h: p value for heterogeneity;

^*OR with statistical significance; a: studies with more than 500 participants; b: studies with less than 500 participants;