Table 3.
Comparative assessment of C-index performance for nomogram and models incorporating disease severity scoring systems in predicting 28-day mortality among geriatric ischemic stroke patients.
| Models | Development dataset | Validation dataset | ||
|---|---|---|---|---|
| C-index | 95% CI | C-index | 95% CI | |
| Nomogram | 0.809 | 0.778–0.841 | 0.786 | 0.737–0.835 |
| SOFA | 0.728 | 0.690–0.765 | 0.748 | 0.690–0.806 |
| APSIII | 0.712 | 0.674–0.749 | 0.712 | 0.653–0.771 |
| LODS | 0.708 | 0.671–0.745 | 0.729 | 0.673–0.786 |
| SAPSII | 0.744 | 0.709–0.779 | 0.766 | 0.715–0.818 |
| OASIS | 0.809 | 0.778–0.841 | 0.786 | 0.737–0.835 |
C-index concordance index, CI confidence interval, SOFA sequential organ failure assessment, APS III acute physiology score III, LODS logistic organ dysfunction system, SAPS II simplified acute physiology score II, OASIS oxford acute severity of illness score.