| Age; years* | 70 |
| 18–65 | 413 (38.1) |
| 66–75 | 268 (24.7) |
| 76–80 | 126 (11.6) |
| 81+ | 277 (26.3) |
| Female gender | 586 (54.1) |
| ASA classification |
| 1 | 141 (13.0) |
| 2 | 454 (41.9) |
| 3 | 381 (35.2) |
| 4–5 | 108 (10.0) |
| Co-morbidities |
| Chronic obstructive pulmonary disease | 173 (16.0) |
| Cardiovascular disease |
| Hypertension | 479 (44.2) |
| Atrial fibrillation | 119 (11.0) |
| Heart failure | 77 (7.1) |
| Ischemic heart disease** | 140 (12.9) |
| Diabetes requiring medication | 105 (9.7) |
| Stroke | 93 (8.6) |
| Cirrhosis | 29( 2.7) |
| Dialysis dependent renal failure | 4 (0.4) |
| Preoperative sepsis status |
| Non infected preoperatively | 441 (38.2) |
| SIRS | 15 (1.4) |
| Sepsis | 307 (28.3) |
| Severe sepsis | 46 (4.2) |
| Septic shock | 34 (3.1) |
| Unknown | 268 (24.7) |
| Preoperative performance status ECOG |
| 0 | 522 (48.2) |
| 1 | 313 (28.9) |
| 2 | 148 (13.7) |
| 3 | 84 (7.8) |
| 4 | 17 (1.6) |
| Surgery characteristics |
| Pathology: |
| Perforation | 431 (39.8) |
| Obstruction | 623 (57.5) |
| Ischemia | 196 (18.1) |
| Malignancy | 211 (19.5) |
| Type: |
| Reoperation after elective surgery | 190 (17.5) |
| Primary | 894 (82.5 |
| Procedure |
| Laparoscopic surgery | 111 (10.2) |
| Laparoscopic converted to laparotomy | 188 (17.3) |
| Laparotomy | 785 (72.5) |
