Table 5 Multivariate analysis of prognostic factors for progression-free survival and cause-specific survival.

P-value

Hazard ratio (95% CI)

P-value

Hazard ratio (95% CI)

Age

0.117

0.05

   ≤60 years

0.658 (0.362-1.197)

0.559 (0.312-1.001)

   >60 years

1

1

T stage

0.006

0.008

   Tx, T1-T2

0.288 (0.12-0.694)

0.332 (0.146-0.753)

   T3-T4

1

1

Tumour subsite

0.06

0.05

   Oropharyngeal tumours

0.551 (0.297-1.021)

0.554 (0.305-1.005)

   Non-oropharyngeal tumours

1

1