Table 3.
Comparison of the overall discriminatory ability of selected scoring systems to predict inpatient mortality in the cohort using receiver operating characteristic curves
| Scoringsystem | Valid cases | AUC (95% CI) | p-value* |
|---|---|---|---|
| ASA grade | 77 | 0.80 (0.69–0.92) |
0.0001 |
| P-POSSUM | 101 | 0.85 (0.76–0.94) |
<0.0001 |
| Waterlow (preoperative) | 90 | 0.81 (0.71–0.92) |
<0.0001 |
AUC = area under the curve; CI = confidence interval; ASA = American Society of Anesthesiologists; P-POSSUM = Portsmouth Physiological and Operative Severity Score for the enUmeration of Mortality and morbidity
*
chi-squared test