Primary tumor localisation | Oropharynx | 260 |
| Floor of the mouth | 100 |
| Larynx | 106 |
| Hypopharynx | 93 |
| Tongue | 46 |
| CuP | 38 |
| Nasopharynx | 24 |
| Paranasal sinus | 17 |
| Salivary gland | 15 |
T stage | Tx (CuP) | 38 |
| T1 | 83 |
| T2 | 220 |
| T3 | 175 |
| T4 | 183 |
N stage | N0 | 149 |
| N1 | 71 |
| N2a | 27 |
| N2b | 211 |
| N2c | 207 |
| N3 | 34 |
UICC stage | Stage I | 22 |
| Stage II | 61 |
| Stage III | 98 |
| Stage IV | 518 |
Resection status | Definitive treatment | 185 |
| R2 resection | 75 |
| R1 resection | 130 |
| R0 resection | 309 |
Chemotherapy | Without chemotherapy |
|
| No indication | 133 |
| Contraindication | 113 |
| Simultaneous chemotherapy | 453 |