Table 2. Patient and tumor characteristics.
| Parameter | n (%) | ||
| Total | 143 (100) | ||
| Sex | |||
| Male | 98 (69) | ||
| Female | 45 (31) | ||
| Age | |||
| <50 | 21 (15) | ||
| ≥50 | 122 (85) | ||
| Tobacco exposure | |||
| Yes | 95 (66) | ||
| No | 48 (34) | ||
| Alcohol exposure | |||
| Yes | 60 (42) | ||
| No | 83 (58) | ||
| Tumor location | |||
| Tonsillar fossae and pillars | 90 (63) | ||
| Base of tongue | 21 (14) | ||
| Glosso-tonsillar sulcus | 11 (8) | ||
| Valleculae | 8 (6) | ||
| Soft palate | 7 (5) | ||
| Posterior pharyngeal wall | 6 (4) | ||
| Differentiation | |||
| Well | 70 (49) | ||
| Moderate | 50 (35) | ||
| Poor | 23 (16) | ||
| T stage | |||
| T1/T2 | 59 (41) | ||
| T3/T4 | 84 (59) | ||
| N stage | |||
| N0 | 48 (34) | ||
| N1-N3 | 95 (66) | ||
| AJCC* classification | |||
| Stage I/II | 29 (20) | ||
| Stage III/IV | 114 (80) | ||
*American Joint Committee on Cancer