Stage | Observed survival* | Relative survival¶ | Median survival (months) | ||
5-year (percent) | 10-year (percent) | 5-year (percent) | 10-year (percent) | ||
I | 61.0 | 46.0 | 75.6 | 71.1 | 112 |
II | 52.0 | 28.8 | 64.3 | 45.8 | 63 |
III | 41.4 | 18.5 | 60.5 | 33.1 | 46 |
IV | 15.5 | 5.1 | 19.9 | 8.9 | 14 |