Table 3. Multivariable analysis of factors associated with overall survival (OS).

Variable	Hazard ratio (95% CI)	P value
Pathological response (complete vs. incomplete)	0.24 (0.12–0.47)	<0.001
Age (1-year increment)	1.03 (1.01–1.06)	0.008
Signet cell (yes vs. no)	1.64 (1.07–2.54)	0.025
ECOG		<0.001
2 vs. 0	3.69 (1.89–7.22)
1 vs. 0	1.38 (0.90–2.12)
Length of stay (1-day increment)	1.02 (1.01–1.03)	0.004