Table 1.
Frequency distribution and relative risks associated with genotype variants ofCYP2E1 detected RFLP using RsaI
| CYP2E1 | Frequency | RR | 95%CI | |
| Cases | Controls | |||
| Total | 217* | 297 | ||
| + / + | 138 | 189 | 1.00 | |
| + / - | 71 | 103 | 0.94 | 0.64 - 1.39 |
| - / - | 8 | 5 | 2.19 | 0.62 - 8.68 |
| Thai | 132 | 99 | ||
| + / + | 93 | 70 | 1.00 | |
| + / - | 37 | 28 | 0.99 | 0.54 - 1.86 |
| - / - | 2 | 1 | 1.51 | 0.08 - 90.06 |
| Chinese | 56 | 98 | ||
| + / + | 27 | 43 | 1.00 | |
| + / - | 24 | 51 | 0.75 | 0.36 - 1.57 |
| - / - | 5 | 4 | 1.99 | 0.39 - 10.87 |
* 29 cases lack precise information regrarding ethnicity +, The allele could be digested with RsaI enzyme -, The allele could not be digested with RsaI enzyme