Table 4.

Final multivariate Cox regression prognostic model for overall survival

Characteristics	HR (95% CI)	P value
ECOG-PS (≥2 versus 0-1)	3.20 (1.76-5.83)	0.0001
Liver metastases (yes versus no)	2.81 (1.59-4.98)	0.0004
Peritoneal metastases (yes versus no)	2.60 (1.40-4.83)	0.002
Albumin (<3.5 g/dl versus ≥3.5 g/dl)	2.46 (1.28-4.74)	0.01
PPI use (yes versus no)	1.64 (1.04-2.57)	0.03

Bold numbers indicate statistically significant values.

CI, confidence interval; ECOG-PS, Eastern Cooperative Oncology Group performance status; HR, hazard ratio; PPI, proton-pump inhibitors.