Group | N | GSTM1 normal genotype | GSTM1 null genotype | GSTT1 normal genotype | GSTT1 null genotype |
Smokers | 100 | 99 (99%) | 01 (1%) | 94 (94%) | 6 (6%) |
Non smokers | 100 | 86 (86%) | 14 (14%) | 72 (72%) | 28 (28%) |