Table 4.
Comparison of models in predicting the probability of ICU p-LOS of obesity patients with sepsis.
| Predictive model | AUROC | P -value | IDI | P -value | |
|---|---|---|---|---|---|
| Training set | APACHE IV | 0.647 (0.631–0.663) | <0.001 | 0.099 (0.087–0.112) | <0.001 |
| SOFA | 0.670 (0.654–0.685) | <0.001 | 0.083 (0.070–0.096) | <0.001 | |
| Nomogram | 0.742 (0.727–0.756) | ||||
| Internal validation set | APACHE IV | 0.655 (0.631–0.678) | <0.001 | 0.085 (0.067–0.103) | <0.001 |
| SOFA | 0.648 (0.624–0.671) | <0.001 | 0.089 (0.071–0.107) | <0.001 | |
| Nomogram | 0.730 (0.708–0.752) | ||||
| External validation set | APACHE IV |
|
|
|
|
| SOFA | 0.558 (0.535–0.581) | <0.001 | 0.196 (0.180–0.212) | <0.001 | |
| Nomogram | 0.778 (0.760–0.797) |
AUROC, area under the receiver operating characteristic curve; CI, confidence interval; IDI, integrated discrimination improvement; APACHE IV, acute physiology and chronic health evaluation IV; ICU, intensive care unit; p-LOS, prolonged length of stay.