| Age |
| <65 | 191 | 8.37 | 0.024 |
| ≥65 | 39 | 20.51 |
| Location of the tumor |
| Head of pancreas | 82 | 8.54 | 0.061 |
| Beyond the pancreas | 148 | 11.48 |
| Pre-operation realbumin |
| <20 g/dl | 48 | 18.75 | 0.034 |
| ≥20 g/dl | 182 | 8.2 |
| Hemoglobin |
| ≥10 g/dl | 217 | 9.67 | 0.125 |
| <10 g/dl | 13 | 23.07 |
| Pre-operation biliary drainage (ERBD/PTBD) |
| Yes | 78 | 16.67 | 0.027 |
| No | 152 | 7.23 |
| Tumor differentiation |
| <100 | 178 | 7.86 | 0.018 |
| ≥100 | 52 | 19.23 |
| Pre-operation Bilirubin Total (mg/dl) |
| <5 | 156 | 10.25 | 0.898 |
| ≥5 | 74 | 10.81 |
| Pre-operation Serum Albumin (g/dl) |
| <3,5 | 52 | 7.69 | 0.462 |
| ≥3,5 | 178 | 11.23 |