| Variable | Univariate analysis | Multivariate analysis | ||
| Median overall survival (95% CI) | p-value | Hazard ratio (95% CI) | p-value | |
| Gender | ||||
| Male | 22 (14.11 - 29.89) | 0.351 | ||
| Female | 14 (10.37 - 17.62) | |||
| ASA-Score | ||||
| 2 | 17 (12.39 - 21.61) | 0.668 | ||
| 3 | 18 (10.55 - 25.45) | |||
| Type of surgery | ||||
| PD | 22 (16.02 - 27.99) | 0.087 | 0.877 (0.518 - 1.483) | 0.624 |
| PDVR | 16 (9.96 - 22.04) | |||
| Histopathologically proven venous tumor infiltration | ||||
| yes | 12 (10.97 - 13.04) | 0.048 | 1.205 (0.586 - 2.480) | 0.612 |
| no | 19 (13.67 - 24.33) | |||
| Tumor status | ||||
| pT1 | 14 (0 - 49.28) | 0.338 | ||