. 2015 Jun 22;10(6):e0129372. doi: 10.1371/journal.pone.0129372

Table 3. Main results of the pooled data for the NOS3 +894G>T polymorphism.

Subgroups		TT vs. GG			TT+GT vs. GG			TT vs. GT+GG			T vs. G			GT vs. GG
Subgroups		OR (95% CI)	P_h	I ² (%)	OR (95% CI)	P_h	I ² (%)	OR (95% CI)	P_h	I ² (%)	OR (95% CI)	P_h	I ² (%)	OR (95% CI)	P_h	I ² (%)
Total		1.29 (0.95,1.75)	0.372	6.9	1.03 (0.66,1.60)	0.000	80.8	1.27 (0.96,1.68)	0.639	0	1.05 (0.82,1.34)	0.015	64.4	0.97 (0.59,1.59)	0.000	82.8
Ethnicity
Caucasians		1.08 (0.76,1.54)	0.699	0	0.96 (0.75,1.24)	0.000	0	1.13 (0.82,1.56)	0.514	0	1.02 (0.86,1.21)	0.827	0	0.93 (0.71,1.21)	0.625	0
Non-Caucasians		2.10 (1.14,3.88)	0.534	0	1.09 (0.40,2.99)	0.002	92.1	1.84 (1.02,3.33)	0.953	0	1.11 (0.63,1.94)	0.002	84.5	0.99 (0.33,2.99)	0.000	92.9
Type of migraine
MA	Total	1.61 (1.12,2.31)	0.700	0	1.10 (0.65,1.87)	0.001	76.4	1.50 (1.08,2.09)	0.782	0	1.18 (0.90,1.55)	0.057	53.4	0.97 (0.52,1.79)	0.000	79.8
	Caucasians	1.43 (0.94,2.17)	0.665	0	1.11 (0.81,1.51)	0.996	0	1.41, (0.98,2.04)	0.450	0	1.17 (0.95,1.44)	0.787	0	0.99 (0.71,1.39)	0.775	0
	Non-Caucasians	2.37 (1.12,4.99)	0.656	0	1.07 (0.30,3.88)	0.000	90.5	1.93 (0.94 3.97)	0.866	0	1.11 (0.56,2.19)	0.007	80.0	0.93 (0.21,4.02)	0.000	91.6
MO	Total	1.06 (0.73,1.54)	0.233	26.9	0.94 (0.64,1.39)	0.012	65.7	1.10 (0.78, 1.55)	0.390	4.1	0.97 (0.75,1.24)	0.058	53.1	0.93 (0.61,1.42)	0.008	68.3
	Caucasians	0.80 (0.51,1.27)	0.408	0	0.84 (0.62,1.14)	0.832	0	0.89 (0.59, 1.35)	0.299	17.1	0.89 (0.71,1.10)	0.624	0	0.86 (0.62,1.19)	0.627	0
	Non-Caucasians	1.90 (0.97,3.73)	0.625	0	1.05 (0.46,2.394)	0.001	85.3	1.81 (0.95, 3.47)	0.973	0	1.09 (0.67,1.78)	0.018	75.2	0.96 (0.39,2.35)	0.001	86.4

MA: migraine with aura; MO: migraine without aura; OR: odds ratio; 95% CI: 95% confidence interval