Table 4. Comparative survival analysis on the discriminatory ability and prediction accuracy of each staging system for ESCC.
| Classification | Figure | Subgroups | HR | AIC | C-index | AUC (95% CI) |
|---|---|---|---|---|---|---|
| N category | 2A | N0, N1, N2, N3 | 1.513 | 2697.057 | 0.713 | 0.717 (0.667–0.768) |
| LNR category | 2B | LNR0, LNR1, LNR2, LNR3 | 1.662 | 2690.027 | 0.721 | 0.726 (0.676–0.776) |
| TNM stage | 5A | I, II, IIIA, IIIB, IIIC | 1.522 | 2685.089 | 0.723 | 0.728 (0.665–0.781) |
| TRM stage | 5B | I, II, IIIA, IIIB, IIIC | 1.580 | 2671.041 | 0.738 | 0.744 (0.694–0.794) |
N: node; LNR: lymph node ratio; TNM: tumor-node-metastasis; TRM: tumor-ratio-metastasis; HR: hazard ratio; AIC: Akaike information criteria; C-index: concordance index; AUC: area under the receiver operating characteristic curve; CI: confidence interval.