Table 3.

Genotype distribution of the three NOS3 polymorphisms among patient and control groups

		Patients, number (%)	Controls, number (%)
rs1799983	GG	100 (68.0%)	60 (73.2%)	χ2 = 0.69 P = 0.71
	GT	42 (28.6%)	20 (24.4%)
	TT	5 (3.4%)	2 (2.4%)
	Total	147	82
Intron 4 VNTR	Bb	83 (55%)	50 (64.1%)	χ2 = 1.77 P = 0.41
	Ab	61 (40.4%)	25 (32.1%)
	aa	7 (4.6%)	3 (3.8%)
	Total	151	78
rs2070744	TT	72 (47.4%)	54 (65.9%)	χ2 = 7.74 P = 0.02
	TC	70 (46.1%)	23 (28%)
	CC	10 (6.6%)	5 (6.1%)
	Total	152	82

Multinomial logistic regressions were tested for all three polymorphism with age, gender and smoking as covariates and none had an effect on the genotype distribution