Table 2.

Cox regression analysis determining the independent effect of prognostic variables on survival

varible	progression-free survival			overall survival
	HR	95%CI	p-value	HR	95%CI	p-value
Histologic subtype	1.5	1.1-2.0	0.005	1.6	1.2-2.1	0.003
Stage	2.4	1.3-4.4	0.005	2.3	1.2-4.4	0.014
Nodal metastasis	1.8	0.6-5.4	0.309	1.5	0.5-5.0	0.487
P-LVD	0.2	0.1-0.6	0.003	0.3	0.1-0.8	0.019
LVSI	1.1	0.4-2.8	0.872	1.4	0.5-3.7	0.479