Table 3.

Genotype associated with case/control (matched-pair) status.

		Controls			Controls
NOS3 rs1799983		G dom	T/T		T dom	G/G
Cases	G dom*	167	13	T dom	41	57
	T/T	8	0	G/G	41	49
	Chi sq† = 0.762, p = 0.383			Chi sq = 2.296, p = 0.130
		Controls			Controls
NOS3 rs3918227		A dom	C/C		C dom	A/A
Cases	A dom	9	19	C dom	153	0
	C/C	24	101	A/A	0	0
	Chi sq = 0.372, p = 0.542			Chi sq = Not applicable
		Controls			Controls
GNB3 rs5442		A dom	G/G		G dom	A/A
Cases	A dom	2	16	G dom	179	0
	G/G	18	143	A/A	0	0
	Chi sq = 0.029, p = 0.864			Chi sq = Not applicable
		Controls			Controls
DDAH1 rs10158674		C dom	T/T		T dom	C/C
Cases	C dom	7	29	T dom	165	2
	T/T	28	107	C/C	4	0
	Chi sq = 0.0, p = 1.0			Chi sq = 0.167, p = 0.683
		Controls			Controls
DDAH1 rs233115		A dom	G/G		G dom	A/A
Cases	A dom	47	59	G dom	164	21
	G/G	49	41	A/A	11	0
	Chi sq = 0.750, p = 0.386			Chi sq = 2.531, p = 0.112

^*“G dom” refers to a recessive genetic model with the GG genotype compared with either GT or TT genotype.

^†McNemar chi-square test.