| Variables | Before intervention | After intervention | p value |
| Male | 119 | 113 | >0.05 |
| Age | 66 ± 21 | 64 ± 19 | >0.05 |
| APACHE II | 17 ± 5 | 19 ± 3 | >0.05 |
| Operation type |
|
|
|
| Trauma | 132 | 126 | >0.05 |
| Vascular surgery | 13 | 8 | >0.05 |
| Abdominal surgery Other surgery | 27 41 | 23 39 | >0.05 >0.05 |