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Patient characteristics (N = 53)
| Age, median (range) | 54 (20–72) |
| Sex, n (%) | |
| Male | 43 (81) |
| Female | 10 (19) |
| Stage, n (%) | |
| III | 8 (15) |
| IV | 45 (85) |
| IVa | 41 (77) |
| IVb | 4 (8) |
| Primary site, n (%) | |
| Oropharynx | 28 (54) |
| Larynx | 11 (21) |
| Hypopharynx | 6 (11) |
| Oral cavity | 3 (6) |
| Unknown primary | 4 (7) |
| Nasal cavity | 1 (2) |
