Table 4. Comparison of different prognostic models on young patients with gastric cancer.
| Concordance indices | AIC | Likelihood Ratio χ2 | |||
|---|---|---|---|---|---|
| C-index | 95% CI | P (reference; Model 1) | |||
| All-case analysis | |||||
| Model 1† | 0.774 | 0.749–0.799 | 4,614.48 | 291 | |
| Model 2‡ | 0.783 | 0.759–0.806 | 0.042* | 4,584.90 | 320.6 |
| Model 3§ | 0.783 | 0.760–0.807 | 0.034* | 4,582.39 | 323.1 |
| In patients with ≤15 examined LNs | |||||
| Model 1† | 0.787 | 0.752–0.822 | 1,782.58 | 154.8 | |
| Model 2‡ | 0.784 | 0.749–0.820 | 0.331 | 1,786.92 | 150.4 |
| Model 3§ | 0.785 | 0.749–0.820 | 0.354 | 1,786.36 | 151 |
CI, confidence interval; LN, lymph node. *, indicate significant P values. †, Model 1: T stage, AJCC N factor, M stage. ‡, Model 2: T stage, LNR, M stage. §, Model 3: T stage, LODDS, M stage.