| Independent variables | Coefficient | P-value | Odd ratio estimates |
| IC | 0.2688 | 0.0410 | 1.308 |
| CR | 0.2337 | 0.0198 | 1.263 |
| CA | 0.1744 | 0.0707 | 1.191 |
| Rev | −0.4939 | 0.0005 | 0.610 |