Table 4 Univariate analysis of progression-free survival and cause-specific survival in all patients.
| Â | Â | PROGRESSION-FREE SURVIVAL | CAUSE-SPECIFIC SURVIVAL | ||
|---|---|---|---|---|---|
Factors | N | 3 years (%) | P | 3 years (%) | P |
Age group | Â | Â | Â | Â | Â |
   ≤60 years | 83 | 75.8 | 0.013 | 75.9 | 0.002 |
   >60 years | 68 | 57 |  | 55.6 |  |
Tumour subsite | Â | Â | Â | Â | Â |
   Oropharyngeal tumours | 81 | 80.4 | 0.002 | 79.5 | 0.001 |
   Non-oropharyngeal tumours | 70 | 52 |  | 51.6 |  |
T stage | Â | Â | Â | Â | Â |
   Tx, T1, T2 | 52 | 86.7 | 0.0002 | 87.6 | 0.0003 |
   T3-T4 | 99 | 57.9 |  | 56.1 |  |
Nodal Status | Â | Â | Â | Â | Â |
   N0-N1 | 60 | 73.6 | 0.395 | 70.7 | 0.369 |
   N2-3 | 91 | 64.1 |  | 56.1 |  |
Treatment types | Â | Â | Â | Â | Â |
   With Chemotherapy | 115 | 70.4 | 0.409 | 69 | 0.266 |
   Without chemotherapy | 36 | 58.2 |  | 59.5 |  |