Table 3.
Distribution of the American College of Surgeons (ACS) National Surgical Quality Improvement Program (NSQIP) stratification for the primary and secondary outcomes and frequency of actual events
| Outcome | ACS NSQIP stratification | Frequency of actual events (%) | No. of actual events labelled as ‘average’ or ‘above average’ risk | |
| No. labelled as ‘below average’ risk |
No. labelled as ‘average’ or ‘above average’ risk |
|||
| Major adverse cardiac events |
385 | 39 | 12 (3) | 8 |
| All-cause mortality | 387 | 37 | 12 (3) | 5 |
| Morbidity | 368 | 56 | 60 (14) | 25 |
| Pneumonia | 364 | 60 | 61 (14) | 35 |
| Surgical site Infection | 288 | 136 | 5 (1.2) | 3 |
| Urinary tract infection | 328 | 96 | 8 (1.9) | 3 |
| Venous thromboembolism | 387 | 35 | 6 (1.4) | 2 |
| Renal failure | 388 | 19 | 14 (3.3) | 6 |
| Return to operating room | 327 | 96 | 10 (2.3) | 6 |