| The locations of incidents during surgery | Cases (n = 107) | % |
| Laparotomy | 29 | 12.3 |
| Thoracotomy | 25 | 10.6 |
| Video-assisted surgery | 15 | 6.4 |
| Open heart surgery | 13 | 5.5 |
| Other surgery | 9 | 3.8 |
| Postoperative treatment | 8 | 3.4 |
| Limbs | 1 | 0.4 |
| Others | 7 | 3.1 |