|  | 95%-confidence interval |  |  |
---|---|---|---|---|
variable | odds ratio | lower limit | upper limit | p-value |
surgical approach | Â | Â | Â | Â |
TT vs. TH | 0.716 | 0.143 | 3.594 | 0.685 |
UICC | Â | Â | Â | 0.020 |
-IIa vs. I | 5.483 | 0.796 | 37.788 | 0.084 |
-IIb vs. I | 8.575 | 0.850 | 86.488 | 0.068 |
-III vs. I | 12.133 | 1.626 | 90.526 | 0.015 |
-IV vs. I | 28.124 | 2.773 | 285.211 | 0.005 |