Table 1.

Univariate and multivariate COX analysis.

Characteristics	Total (N)	Univariate analysis		Multivariate analysis
		Hazard ratio (95% CI)	p Value	Hazard ratio (95% CI)	p Value
T stage	241
T1	138	Reference
T2	72	1.109 (0.477–2.578)	0.810	0.000 (0.000-Inf)	0.999
T4	10	10.411 (4.231–25.618)	<0.001
T3	21	3.251 (1.274–8.292)	0.014	2.470 (0.268–22.747)	0.425
N stage	193
N0	133	Reference
N1	60	3.544 (1.572–7.987)	0.002	3.319 (0.967–11.398)	0.057
M stage	125
M0	114	Reference
M1	11	4.290 (1.401–13.137)	0.011	0.025 (0.000-Inf)	1.000
Clinical stage	295
Stage I	158	Reference
Stage II	69	0.895 (0.417–1.921)	0.776	0.000 (0.000-Inf)	0.999
Stage III	46	1.570 (0.732–3.366)	0.247	0.000 (0.000-Inf)	0.999
Stage IV	22	5.109 (2.559–10.199)	<0.001
Age	302
< =50	186	Reference
>50	116	1.295 (0.761–2.204)	0.340
Histological type	302
Adenosquamous	52	Reference
Squamous cell carcinoma	250	0.983 (0.481–2.011)	0.963