| Intraoperative diagnosis | Effective | Percentage |
| gastric perforation | 5 | 11.9 |
| Duodenal perforation | 1 | 2.3 |
| Jejunal perforation | 12 | 28.5 |
| Ileal perforation | 5 | 11.9 |
| Colonic perforation | 5 | 11.9 |
| Rectal perforation | 2 | 4.6 |
| Peri-anal tear extending to the rectum | 3 | 7.1 |
| Total | 42 | 100 |