Table 4.
Univariate model for increased risk of ALT twice the upper normal limit value
| Variable | OR (95% CI) |
| Smoking (n = 319) | 0.88 (0.26-2.96) |
| Smoking > 10 pack/yr (n = 152)1 | Not calculated3 |
| Smoking > 10 pack/yr (n = 137)2 | 0.43 (0.05-3.39) |
| Smoking > 20 pack/yr (n = 77)1 | Not calculated3 |
| Smoking > 20 pack/yr (n = 64)2 | Not calculated3 |
1
vs smokers less than 10 packs/yr and non-smokers;
2
vs nonsmokers only;
3
Could not be calculated as there were no subjects with an ALT level twice the upper normal limit value in the specified group.