| Grade | I | 9 | 11.25 | 12 | 15.00 | 0.781 |
| II | 47 | 58.75 | 45 | 56.25 | ||
| III | 24 | 30.00 | 23 | 28.75 | ||
| Stage at diagnosis | I | 6 | 7.50 | 4 | 5.00 | 0.041 |
| II | 15 | 18.75 | 16 | 20.00 | ||
| III | 33 | 41.25 | 19 | 23.75 | ||
| IV | 26 | 32.50 | 41 | 51.25 | ||
| Surgery | No surgery | 10 | 12.50 | 20 | 25.00 | 0.006 |
| Curative surgery | 66 | 82.50 | 48 | 60.00 | ||
| Palliative surgery | 4 | 5.00 | 12 | 15.00 | ||
| Causes of death | No (still alive) | 40 | 50.00 | 32 | 40.00 | < 0.001 |
| Local causes related to tumor | 8 | 10.00 | 6 | 7.50 | ||
| Causes related to metastatic disease | 12 | 15.00 | 19 | 23.75 | ||
| General causes | 20 | 25.00 | 21 | 26.25 | ||
| Chemotherapy toxicity | 0 | 0.00 | 2 | 2.50 |