Table 2.
Patients’ clinical characteristics
| Characteristics | Frequencies | (%) |
|---|---|---|
| Tumor site | ||
| Hypopharynx | 8 | 4.8 |
| Larynx | 29 | 17.5 |
| Oral cavity | 34 | 20.5 |
| Oropharynx | 91 | 54.8 |
| Missing | 4 | 2.4 |
| Stage disease (according to TNM 7th edition) | ||
| I | 5 | 3 |
| II | 14 | 8.4 |
| III | 22 | 13.3 |
| IV | 109 | 65.7 |
| Missing | 16 | 9.6 |
| Performance status* | ||
| 0 | 105 | 63.3 |
| 1 | 58 | 34.9 |
| Missing | 3 | 1.8 |
| Smoker | ||
| Current/former | 111 | 66.9 |
| Never | 47 | 28.3 |
| Missing | 8 | 4.8 |
| Alcohol consumption | ||
| Current/former | 57 | 34.3 |
| Never | 55 | 33.1 |
| Missing | 54 | 32.5 |
| HPV status | ||
| Negative | 100 | 60.2 |
| Positive | 66 | 39.8 |
| Radiation therapy intent | ||
| Adjuvant (45 Gy–66 Gy) with SyT | 20 | 12.0 |
| Adjuvant (45 Gy–66 Gy) without SyT | 32 | 19.3 |
| Definitive (66 Gy–72 Gy) with SyT | 84 | 50.6 |
| Definitive (66 Gy–72 Gy) without SyT | 28 | 16.9 |
| Missing | 2 | 1.2 |
*According to Eastern Cooperative Oncology Group (ECOG). HPV, human papilloma virus; Gy, gray; SyT, systemic therapy