4.

Multivariate Cox proportional Hazard Analysis of 5-year survival rate

Variable	Regression coefficient	Relative risk	95%CI	P
Complete resection	-0.903	0.407	0.206-0.797	0.009
Uncomplete resection	0.752	2.03	1.051-3.814	0.039
T4	0.646	1.909	1.020-3.572	0.043
T3	0.053	1.054	0.545-2.038	0.875
Signal station	-0.932	0.374	0.185-0.772	0.008
Multiple stations	0.551	1.786	0.874-3.129	0.052