Table 3. Differences between Masaoka-Koga categories.
| HR vs. adjacent Masaoka-Koga staging category | CIR, R0 (67/1,060)* |
OS, R0 (23/1,085)* |
OS, any R (39/1,198)* |
|||||
|---|---|---|---|---|---|---|---|---|
| HR | P | HR | P | HR | P | |||
| II vs. I | 2.762 | 0.008 | 1.932 | 0.284 | 2.422 | 0.122 | ||
| III vs. II | 2.428 | 0.009 | 1.904 | 0.286 | 2.265 | 0.113 | ||
| IV vs. III | — | — | — | — | 3.506 | 0.002 | ||
| IVb vs. IVa | — | — | — | — | 6.482 | 0.078 | ||
Hazard ratios and statistical differences (χ2) by Cox proportional hazards regression models, adjusted by diagnosis. *, number of events/total number of patients in entire data set for the particular analysis. HR, hazard ratio; CIR, cumulative incidence of recurrence; R0, complete resection; OS, overall survival.