Survival outcomes according to the seventh and eighth edition staging systems
| Seventh edition | P | Eighth edition | P | ||
|---|---|---|---|---|---|
| OS (95%CI) | OS (95%CI) | ||||
| Cancer stage | IA | 35.7 m (95%CI: 18.3–53.2 m) | < 0.001 | 35.7 m (95%CI: 18.3–53.2 m) | < 0.001 |
| IB | 18.5 m (95%CI: 16.9–20.0 m) | 18.5 m (95%CI: 16.8–20.2 m) | |||
| IIA | 15.4 m (95%CI: 14.8–16.0 m) | 15.5 m (95%CI: 14.6–16.4 m) | |||
| IIB | 12.3 m (95%CI: 11.7–12.9 m) | 13.3 m (95%CI: 12.8–13.8 m) | |||
| III | 7.5 m (95%CI: 6.6–8.4 m) | 8.9 m (95%CI: 8.2–9.6 m) | |||
| T stage with N0 | T1 | 35.7 m (95%CI: 18.3–53.2 m) | < 0.001 | 35.7 m (95%CI: 18.3–53.2 m) | < 0.001 |
| T2 | 18.5 m (95%CI: 16.9–20.0 m) | 18.5 m (95%CI: 16.8–20.2 m) | |||
| T3 | 15.4 m (95%CI: 14.8–16.0 m) | 15.5 m (95%CI: 14.6–16.4 m) | |||
| T4 | 9.1 m (95%CI: 8.6–9.6 m) | 9.1 m (95%CI: 8.6–9.6 m) | |||
| N stage | N0 | 15.4 m (95%CI: 14.4–16.4 m) | < 0.001 | 15.4 m (95%CI: 14.4–16.4 m) | < 0.001 |
| N1 | 11.0 m (95%CI: 10.4–11.6 m) | 12.1 m (95%CI: 11.6–12.6 m) | |||
| N2 | – | 10.1 m (95%CI: 9.4–10.8 m) |