Table 4.
Comparison of the predictive accuracy of the prognostic models.
| Model | OS (n=167) | RFS (n=167) | ||
|---|---|---|---|---|
| C-index (95% CI) | p value | C-index (95% CI) | p value | |
| TCF7 | 0.701 (0.654-0.748) | 0.654 (0.610-0.698) | ||
| Grade | 0.594 (0.539-0.649) | 0.564 (0.511-0.617) | ||
| Grade+TCF7 | 0.746 (0.690-0.802) | <0.001 | 0.686 (0.631-0.740) | <0.001 |
| TNM | 0.732 (0.685-0.779) | 0.690 (0.646-0.734) | ||
| TNM+TCF7 | 0.795 (0.752-0.838) | <0.001 | 0.740 (0.695-0.785) | <0.001 |
| TNM+Grade | 0.765 (0.715-0.815) | 0.728 (0.678-0.777) | ||
| Nomogram | 0.820 (0.778-0.862) | <0.001 | 0.758 (0.711-0.805) | 0.004 |
OS, overall survival; RFS, recurrence-free survival; C-index, concordance index; CI, confidence interval.
A higher c-index indicates better discrimination.