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Patient characteristics
| Characteristic | No. of patients (%) |
|---|---|
| Sex | |
| Male | 124 (70.5) |
| Female | 52 (29.5) |
| Median age (years old) | 51.5 (24–74) |
| Pathology | |
| Non-keratinized carcinoma | 174 (98.9) |
| Keratinized carcinoma | 2 (1.1) |
| Site | |
| Right | 94 (53.4) |
| Left | 82 (46.6) |
| T classification | |
| T1 | 53 (30.1) |
| T2 | 50 (28.4) |
| T3 | 54 (30.7) |
| T4 | 19 (10.8) |
| N classification | |
| N0 | 18 (10.3) |
| N1 | 66 (37.5) |
| N2 | 52 (29.5) |
| N3 | 40 (22.7) |
| M | |
| M0 | 173 (98.3) |
| M1 | 3 (1.7) |
| Clinic stage | |
| I | 9 (5.1) |
| II | 46 (26.1) |
| III | 67 (38.1) |
| IVa | 51 (29.0) |
| IVb | 3 (1.7) |
