Table 2 Distribution of CYP1A1 alleles in cases and controls.

CYP1A1*1

452 (85.3)

168 (81.6)

1.0 (Ref.)

CYP1A1*2A

45 (8.5)

11 (5.3)

0.62 (0.3-1.2)

0.20

CYP1A1*2B

7 (1.3)

12 (5.8)

4.59 (1.4-12.6)

< 0.01

CYP1A1*2C

1 (0.2)

1 (0.5)

Nc

CYP1A1*3

2 (0.4)

2 (1)

Nc

CYP1A1*4

23 (4.3)

12 (5.8)

1.32 (0.7-2.9)

0.29