Table 1 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) |