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Interaction between alcohol drinking and polymorphisms of the ALDH2 and ADH2 genes, and the odds ratio (OR) for colorectal cancer
| Genotypes | Drinker | Controls | Cases | OR1 (95% CI) |
| ALDH2 | ||||
| A/A + A/G | No | 64 | 32 | 1.00 |
| G/G | No | 60 | 41 | 1.36 (0.76-2.43) |
| A/A + A/G | Yes | 35 | 27 | 1.39 (0.69-2.81) |
| G/G | Yes | 63 | 90 | 2.70 (1.57-4.66) |
| ADH2 | ||||
| G/G + G/A | No | 65 | 34 | 1.00 |
| A/A | No | 59 | 39 | 1.27 (0.71-2.26) |
| G/G + G/A | Yes | 64 | 54 | 1.65 (0.94-2.91) |
| A/A | Yes | 34 | 63 | 3.44 (1.84-6.42) |
OR was adjusted for age and smoking status.
