Table 4. Association of NOS3 genotype and diabetes case status in African Americans stratified by obesity.

Variable	Genotype	BMI	kg/m2	n	OR	95% CI	p
			All	3,737
Obesity(BMI ≥30 kg/m2)					2.53	2.13–3.01	<0.001
Interaction1					0.47	0.11–2.06	0.32
G894T	GG				**	**	**
	GT				0.91	0.74–1.12	0.37
	TT				0.79	0.38–1.63	0.52
			<30	2,236
G894T	GG				**	**	**
	GT				0.97	0.71–1.31	0.83
	TT				1.12	0.42–3.00	0.82
			≥30	1,501
G894T	GG				**	**	**
	GT				0.86	0.64–1.15	0.30
	TT				0.53	0.18–1.58	0.25

NOS3, endothelial nitric oxide synthase 3; n, number; OR, odds ratio; CI, confidence interval; p, p-value adjusted for age, sex, and field center; BMI, body mass index,

¹interaction term for NOS3 G894 TT genotype and obesity;

^**reference genotype.