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Characteristics of Patients
| Variables | Number (%) |
|---|---|
| Primary tumor | 387 (100) |
| Age | |
| Median | 61 |
| Range | 20 - 95 |
| Gender | |
| Male | 292 (75.5) |
| Female | 95 (24.5) |
| Tumor sites | |
| Larynx | 183 (47.3) |
| Oral cavity | 157 (40.6) |
| Pharynx | 23 (5.9) |
| Nasal cavity | 16 (4.1) |
| Salivary gland | 8 (2.1) |
| Histological grading | |
| Grade 1 | 89 (23.5) |
| Grade 2 | 230 (60.8) |
| Grade 3 | 59 (15.7) |
| Lymph node metastasis | |
| No | 363 (95.8) |
| Yes | 16 (4.2) |
| Metastatic tumor | 20 (100) |
| Lymph node | 17 (85.0) |
| Salivary gland | 3 (15.0) |
| Recurrent tumor | 17 (100) |
