Table VI.

Univariate and multivariate analysis for overall survival of patients with pancreatic cancer

Factors	Univariate analysis		Multivariate analysis
	Relative risk	Pa	Relative risks	Pb
Age	1.83	0.233
Gender	0.61	0.674
Tumor location	2.83	0.081
Tumor size	6.22	0.002*	4.11	0.284
Lymphatic metastasis	5.31	0.005*	5.17	0.023*
Neural invasion	4.88	0.061
TNM staging	6.29	0.001*	7.12	0.002*
miR-216b expression	3.97	0.004*	2.74	0.325
KRAS expression	4.69	0.004*	6.17	0.007*

Analysis was performed using Kaplan-Meier method (a) and Cox proportional hazards regression model (b).

^*P < 0.05 represents a significant difference.