Table 2.
Distribution of TNM stage, 1- and 5-year overall survival probability by staging edition
| TNM stage* | % | 1-year survival | 5-year survival |
|---|---|---|---|
| Sixth edition refined | |||
| IA | 3.7 | 0.92 | 0.75 |
| IB | 5.2 | 0.88 | 0.62 |
| II | 5.4 | 0.81 | 0.50 |
| IIIA | 5.6 | 0.76 | 0.30 |
| IIIB | 1.7 | 0.78 | 0.09 |
| IV | 63.9 | 0.30 | 0.07 |
| Unknown | 14.5 | 0.42 | 0.16 |
| Sixth edition broad | |||
| I | 8.9 | 0.90 | 0.68 |
| II | 5.4 | 0.81 | 0.50 |
| III | 7.3 | 0.76 | 0.25 |
| IV | 63.9 | 0.30 | 0.07 |
| Unknown | 14.5 | 0.42 | 0.16 |
| Seventh edition refined | |||
| IA | 4.6 | 0.90 | 0.75 |
| IB | 3.9 | 0.90 | 0.60 |
| IIA | 3.9 | 0.85 | 0.55 |
| IIB | 3.7 | 0.86 | 0.45 |
| IIIA | 4.0 | 0.81 | 0.42 |
| IIIB | 6.1 | 0.70 | 0.24 |
| IIIC | 5.9 | 0.60 | 0.15 |
| IV | 54.3 | 0.25 | 0.04 |
| Unknown | 13.5 | 0.32 | 0.09 |
| Seventh edition broad | |||
| I | 8.5 | 0.91 | 0.70 |
| II | 7.7 | 0.86 | 0.50 |
| III | 16.0 | 0.69 | 0.25 |
| IV | 54.3 | 0.25 | 0.04 |
| Unknown | 13.5 | 0.32 | 0.09 |
*Patients diagnosed with stage 0 cancer (n = 15 sixth edition, n = 19 seventh edition) were not included in the table