Group

N

Smokers

Non smokers

OR^* (95% CI)

RR^# (95% CI)

RD^{^} (95% CI)

P value

GSTT1

normal genotype

100

94 (94%)

72 (72%)

1.00

1.00

GSTT1

null genotype

6 (6%)

28 (28%)

5.2

(2.03 - 13.45)

2.8

(1.37 - 5.86)

36.6

(20.45 - 52.80)

<0.0005

GSTM1

normal genotype

100

99 (99%)

86 (86%)

1.00

1.00

GSTM1

null genotype

01 (1%)

14 (14%)

16.1

(2.08 - 125.1)

8.0

(1.2 - 53.58)

46.8

(32.3 - 61.37)

<0.0013