Table 8. Stable Warfarin Maintenance Dose in Different Genotypes of VKORC1 and CYP2C9 ^a,b,c.

	Values	SAD	P Value
CYP2C9 b			0.014
1*1*	22 (44)	4.2 ± 1.6
1*2*	6 (12)	2.6 ± 1.2
1*3*	2 (4)	2.7 ± 0.3
2*2*	15 (30)	3.2 ± 1.2
2*3*	5 (10)	2.4 ± 0.6
VKORC1 c			0.002
GG	24 (48)	3.9 ± 1.5
GA	24 (48)	2.4 ± 1.1
AA	2 (4)	5.6 ± 0.9

^a Data are presented as No. (%) or Mean ± SD.

^b Genotype variants for vitamin K epoxide reductase gene.

^c Genotype variants for cytochrome P450 2C9.