Table 1. Characteristics of patients and tumors included in the study.
| Group A | Group B | Group C | Group D | ||||||
| HPV+ good 1 | HPV+ poor 1 | HPV− good 1 | HPV− poor 1 | ||||||
| Total | 31 | 21 | 11 | 20 | |||||
| n | % | n | % | n | % | n | % | ||
| Sex | |||||||||
| male | 21 | 68% | 15 | 71% | 9 | 82% | 17 | 85% | |
| female | 10 | 32% | 6 | 29% | 2 | 18% | 3 | 15% | |
| Age (years) | |||||||||
| mean | 56.1 | 62.3 | 60.9 | 64.4 | |||||
| median | 56 | 62 | 59 | 61.5 | |||||
| Stage | |||||||||
| I | 0 | 0% | 0 | 0% | 4 | 36% | 0 | 0% | |
| II | 2 | 6% | 1 | 5% | 2 | 18% | 1 | 5% | |
| III | 13 | 42% | 8 | 38% | 2 | 18% | 5 | 25% | |
| IV | 16 | 52% | 12 | 57% | 3 | 27% | 14 | 70% | |
| Differentiation | |||||||||
| low | 20 | 65% | 14 | 67% | 6 | 55% | 9 | 45% | |
| medium | 11 | 35% | 6 | 29% | 5 | 45% | 8 | 40% | |
| high | 0 | 0% | 1 | 5% | 0 | 0% | 3 | 15% | |
| Treatment | |||||||||
| RT 2 | 31 | 100% | 20 | 95% | 11 | 100% | 20 | 100% | |
| CRT 2 | 0 | 0% | 1 | 5% | 0 | 0% | 0 | 0% | |
1
Good and poor denote clinical outcome.
2
Abbreviations: RT, radiotherapy; CRT, chemoradiotherapy.