| Type of procedure | No of procedures* | Complication percentage† | Percentage of total complications‡ |
| Colon/rectum | 401 | 25.7 | 17.6 |
| Abdominal incisional hernia repair or explorative laparotomy | 489 | 15.3 | 12.8 |
| Central arteries | 164 | 39.0 | 10.9 |
| Oesophagus | 90 | 64.4 | 9.9 |
| Pancreas | 112 | 43.8 | 8.4 |
| Small intestine | 134 | 35.8 | 8.2 |
| Peripheral arteries | 168 | 25.0 | 7.2 |
| Fractures of the lower extremity | 180 | 20.0 | 6.1 |
| Stomach | 94 | 33.0 | 5.3 |
| Gall bladder/bile ducts | 209 | 12.9 | 4.6 |
| Total no of sentinel procedures | 2041 | − | 91.0 |
| Total no of all procedures | 3015 | − | 100.0 |
*Total number of sentinel procedures in a tertiary referral centre from January 2003 until April 2004.
†Complication percentage within this category.
‡Contribution from this category to the total number of complications.