Table 1.
Patient characteristics (n = 503)
| N (%) | Percent (%) | |
|---|---|---|
| Cancer site | ||
| Larynx | 81 | 16 |
| Hypopharynx | 44 | 9 |
| Oropharynx | 173 | 34 |
| Oral cavity | 151 | 30 |
| Parotid gland | 22 | 4 |
| Nasal cavity and sinuses | 17 | 3 |
| Unknown primary | 13 | 3 |
| Missing information | 2 | 0 |
| Cancer stage | ||
| I | 59 | 12 |
| II | 90 | 18 |
| III | 93 | 18 |
| IV | 249 | 50 |
| Missing information | 12 | 2 |
| Karnofsky Performance Score (at baseline) | ||
| 40 | 2 | 0.4 |
| 50 | 1 | 0.2 |
| 60 | 11 | 2 |
| 70 | 40 | 8 |
| 80 | 87 | 17 |
| 90 | 174 | 35 |
| 100 | 180 | 36 |
| Missing information | 8 | 2 |
| Treatment | ||
| Surgery alone | 95 | 1 |
| Radiotherapy alone | 86 | 17 |
| Chemotherapy alone | 11 | 2 |
| Radiochemotherapy without surgery | 136 | 27 |
| Radiochemotherapy with surgery | 74 | 15 |
| Surgery and chemotherapy | 6 | 1 |
| Surgery and radiotherapy | 68 | 14 |
| Other | 27 | 5 |
| Gender | ||
| Male | 365 | 73 |
| Female | 134 | 27 |
| Missing information | 4 | 1 |
| Age | ||
| < 50 years | 50 | 10 |
| 50–59 years | 134 | 27 |
| 60–69 years | 178 | 35 |
| 70–79 years | 113 | 22 |
| ≥ 80 years | 27 | 5 |
| Missing information | 1 | 0 |
| Education | ||
| < 10 years | 157 | 31 |
| 10 years | 83 | 17 |
| > 10 years | 223 | 44 |
| Missing information | 40 | 8 |