| Most frequent histological type | Mean age | Sex-ratio |
Pharynx | Squamous cell carcinoma | 42.1 ± 18.3 | 2.0 |
Oral cavity | Squamous cell carcinoma | 53.2 ± 20.6 | 1.1 |
Nose, sinuses and jaws | Squamous cell carcinoma | 40.5 ± 18.9 | 0.9 |
Thyroid | Papillary carcinoma | 43.4 ± 16.9 | 0.3 |
Salivary glands | Cylindrome and adenocarcinoma | 37.6 ± 16.4 | 0.8 |
Larynx | Squamous cell carcinoma | 57.4 ± 12.5 | 4.0 |