Table 3 Combination of genotype frequencies in GSTM1, GSTT1, and GSTP1 polymorphisms.

GSTT1 + GSTM1

n = 160

n = 220

+/+

45 (28)

95 (43)

1.00

(ref.)

+/null

74 (46)

79 (36)

1.98

1.23-3.18

0.006

7.32

0.02

9.59

0.04

4.04

null/+

21 (13)

20 (9)

2.21

1.09-4.50

0.04

4.19

null/null

20 (13)

26 (12)

1.62

0.82-3.21

0.22

1.49

GSTT1+GSTP1

n = 160

n = 220

+/Ile/Ile

60 (38)

104 (47)

1.00

(ref.)

0.29

3.7

0.12

2.39

+/Ile/Val

50 (31)

56 (26)

1.54

0.94-2.54

0.1

2.55

+/Val/Val

9 (6)

14 (6)

1.11

0.46-2.73

0.99

0.01

+/Ile/Val or Val/Val

59 (37)

70 (32)

1.50

0.91-2.34

null/Ile/Ile

21(13)

22 (10)

1.65

0.84-3.26

0.19

1.66

null/Ile/Val

16(10)

20 (9)

1.38

0.67-2.88

0.49

0.48

null/Val/Val

4(3)

4 (2)

1.73

0.42-7.18

0.69

0.15

null/Ile/Val or Val/Val

20(13)

24 (11)

1.44

0.74-2.83

0.14

2.14

GSTM1+GSTP1

n = 160

n = 220

+/Ile/Ile

35(22)

66 (30)

1.0

(ref.)

0.1

6.19

0.01

6.0

+/Ile/Val

27(17)

40 (18)

1.27

0.67-2.40

0.56

0.34

+/Val/Val

4(3)

9 (4)

0.83

0.24-2.92

0.97

0.001

+/Ile/Val or Val/Val

31(19)

49 (22)

1.19

0.65-2.19

0.68

0.17

null/Ile/Ile

46(29)

60 (27)

1.44

0.82-2.54

0.25

1.32

null/Ile/Val

39(24)

36 (16)

2.04

1.11-3.76

0.03

4.63

null/Val/Val

9(6)

9 (4)

1.88

0.69-5.18

0.32

0.96

null/Ile/Val or Val/Val

48(30)

45 (21)

2.01

1.13-3.58

0.02

5.01