Predicted percentages from the NSQIP calculator and observed percentages from the actual cohort of perioperative outcomes, as well as the Brier score and Brier max between the predicted and observed percentages.
| Complication | Predicted, % | Observed, % | Brier Score | Brier Max |
| Serious complication | 10.48 | 10.1 | 0.00001444 | 0.090799 |
| Any complication | 11.54 | 11.4 | 0.00000196 | 0.101004 |
| Pneumonia | 1.22 | 2.4 | 0.00013924 | 0.023424 |
| Cardiac complication | 0.34 | 0.9 | 0.00003136 | 0.008919 |
| SSI | 2.04 | 1.8 | 5.76E-06 | 0.017676 |
| UTI | 1.69 | 2.7 | 0.00010201 | 0.026271 |
| VTE | 1.55 | 2.3 | 0.00005625 | 0.022471 |
| Renal failure | 0.23 | 0.2 | 9E-08 | 0.001996 |
| Readmission | 5.69 | 6.6 | 8.281E-05 | 0.061644 |
| Return to OR | 3.9 | 03.8 | 0.000001 | 0.036556 |
| Death | 0.28 | 0.9 | 0.00003844 | 0.008919 |
| Discharge to nursing or rehabilitation | 20.55 | 2.64 | 0.00342225 | 0.194304 |
| Sepsis | 1.28 | 1.8 | 0.00002704 | 0.017676 |
NSQIP, National Surgical Quality Improvement Program; OR, operating room; SSI, surgical site infection; UTI, urinary tract infection; VTE, venous thromboembolism.