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Independent variables associated to the perianal disease risk.
| Perianal disease risk | Odds ratio | 95.0% confidence intervals | p value | |
|---|---|---|---|---|
| Lower limit | Upper limit | |||
| Site | 0.0007 | |||
| Ileum | 0.15 | -2.94017 | -0.802703 | |
| Ileocolon | 0.36 | -2.12092 | 0.0871799 | |
| Pack/years < 6 (yrs) | 0.50 | -1.38701 | 0.0248437 | 0.0538 |
| Genotype | 1.87 | -0.103337 | 1.36101 | 0.0886 |
