Table 3.

Multivariate COX Regression analysis on factors for OSCC survival

Characteristics	5-years OS rate		5-year RFS rate
	HR (95 % CI)	P Value	HR (95 % CI)	P Value
T Stage
T1 or T2	0.547 (0.331–0.904)	0.019*	1.188 (0.483–2.923)	0.707
T3 or T4	Reference		Reference
N Stage
N0	0.238 (0.143–0.398)	0.000***	0.614 (0.280–1.347)	0.223
N1-N3	Reference		Reference
Clinical Stage
I-II	2.503 (1.348–4.649)	0.004**	2.249 (0.865–5.852)	0.097
III-IV	Reference		Reference
Foxp3 Staining Value
1	0.197 (0.123–0.315)	0.000***	0.451 (0.239–0.849)	0.014*
2	0.271 (0.174–0.422)	0.000***	0.371 (0.192–0.714)	0.003**
3	Reference		Reference

Abbreviations: OS overall survival, RFS, relapse free survival, HR hazard ratio, 95 % CI 95 % confidence interval

P value was determined using Cox proportional-hazards model. *,P<0.05;**, P<0.01;***, P<0.001