Table 3.

Multivariate analysis for the overall survival

		B	SE	p	HR (95% CI)
Gender	male vs female	−.816	.561	0.146	0.442 (0.147–1.327)
Age	≤55 vs >55	.359	.425	0.399	1.431 (0.622–3.294)
Primary site	hypopharyngeal carcinoma/laryngeal carcinoma vs other primary sites	1.024	.431	0.018	2.783 (1.196–6.476)
Degree of pathological differentiation	Well/modarate vs poor differentiaon / undifferentiation	1.833	.543	0.001	6.254 (2.157–18.129)
T stage	T4 vs T1–3	.406	.441	0.357	1.501 (0.633–3.564)
N stage	N0 vs N1–2 vs N3	1.511	.489	0.002	4.532 (1.737–11.824)
Technology of radiation	2D vs IMRT	−.256	.572	0.654	0.774 (0.252–2.376)
Chemotherapy	No vs Yes	−.596	.419	0.155	0.551 (0.242–1.252)
pCR	Yes vs No	2.460	.694	0.000	11.71 (3.003–45.663)