Table 3 Discriminative ability (Harrell’s C-index) of the novel nomogram for postoperative survival in comparison with traditional prognostic indicators
| Â | Unadjusted C-index (95%CI) | Bias-adjusted C-index (95%CI) |
|---|---|---|
Novel nomogram | 0.770 (0.724–0.815) | 0.757 (0.712–0.802) |
TNM | 0.677 (0.636–0.718) | 0.673 (0.632–0.714) |
CA199 | 0.639 (0.584–0.694) | 0.639 (0.584–0.694) |