Palliative Gastrectomy Prolongs Survival of Metastatic Gastric Cancer Patients with Normal Preoperative CEA or CA19-9 Values: A Retrospective Cohort Study

Table 2

Multivariate analysis for overall survival of patients alive 2 or more months after diagnosis of gastric cancer ().

Variable	HR	95% CI	P value
Gender (male versus female)	0.882	0.606–1.284	0.513
Age (60 versus 60 years)	1.305	0.880–1.934	0.186
PS (2–4 versus 0-1)	1.183	0.760–1.842	0.456
Gastrectomy (yes versus no); Chemotherapy (yes versus no)	0.500; 0.644	0.325–0.771; 0.370–1.123	0.002; 0.121

Cox regression model.
CI: confidence interval, HR: hazard ratio, PS: performance status by Eastern Cooperative Oncology Group.