Table 2.
Baseline Characteristics of Study Participants
| Characteristics | Number (%) |
|---|---|
| Sex | |
| Male | 29 (100%) |
| Female | 0 (0%) |
| Primary site | |
| Tonsil | 20 (69.0%) |
| Base of tongue | 6 (20.7%) |
| Soft palate | 3 (10.3%) |
| T stage | |
| T1 | 6 (20.7%) |
| T2 | 11 (38.0%) |
| T3 | 10 (34.4%) |
| T4 | 2 (6.9%) |
| N stage | |
| N0 | 7 (24.1%) |
| N1 | 6 (20.7%) |
| N2 | 12 (41.4%) |
| N3 | 4 (13.8%) |
| M stage | |
| M0 | 29 (100%) |
| M1 | 0 (0%) |
| Type of radiotherapy | |
| 2DRT | 6 (20.7%) |
| 3DCRT | 8 (27.6%) |
| IMRT | 15 (51.7%) |
| Duration after finishing radiotherapy course | |
| 1–5 years | 22 (75.9%) |
| > 5 years | 7 (24.1%) |
2DRT, 2-dimensional radiotherapy; 3DCRT, 3-dimensional conformal radiotherapy; IMRT, intensity-modulated radiotherapy.