Table 3.

Significant prognostic factors according to multivariate analysis

End point	Hazard ratio (95%CI)	p-value
Overall survival
T stage T4 vs. T1–3	3.914 (1.441–10.63)	0.007
N stage N3 vs. 0–2	4.735 (1.655–13.547)	0.004
Disease-free survival
Gender Male vs. Female	4.537(1.392–14.792)	0.012
T stage T4 vs. T1–3	2.705(1.359–5.384)	0.005
N stage N3 vs. 0–2	3.425 (1.671–7.019)	0.001
Post-radiation sinusitis Yes vs. no	3.734(1.732–8.051)	0.001
Freedom from local failure
T stage T4 vs. T1–3	2.786(1.069–7.259)	0.036
Post-radiation sinusitis Yes vs. no	8.9441(2.002–39.965)	0.004
Freedom from distant failure
N stage N3 vs. 0–2	4.982 (2.149–11.552)	< 0.001
Post-radiation sinusitis Yes vs. no	2.951 (1.233–7.064)	0.015