Table 3. Multivariate cox proportional hazard analysis of OS and DFS for 65 patients eligible for the study.

Variable	OS				DFS
	Hazard ratio	95% CI	P value		Hazard ratio	95% CI	P value
Tumor histology
Adenocarcinoma	Reference	—	—		—	—	—
Others	8.964	1.492–53.870	0.017		—	—	—
Pathological stage
I	Reference	—	—		Reference	—	—
II or III	14.199	2.839–71.028	0.001		7.837	1.944–31.598	0.004

CI, confidence interval; OS, overall survival; DFS, disease-free survival.