Table 4. Cox regression analysis (PFS).

Variables	Univariate Cox regression model				Multivariate Cox regression model
	HR	95% CI	P		HR	95% CI	P
Sex (male vs. female)	0.923	0.531–1.606	0.778
Age (years, <65 vs. ≥65)	1.106	0.679–1.803	0.685
Disease site
Cardia	1.0
Gastric fundus	–	–	–
Gastric body	1.411	0.762–2.613	0.274
Gastric antrum	1.068	0.584–1.953	0.831
Histology
Differentiation (1= moderately; 2= poorly)	1.274	0.461–3.520	0.641
Site of metastases
Liver	0.974	0.592–1.603	0.918
Lung	0.975	0.389–2.422	0.957
Retroperitoneal lymph node metastasis	1.163	0.710–1.907	0.549
Others	1.575	0.962–2.580	0.071
Therapy (aTS vs. SOX)	0.610	0.372–0.999	0.050		0.605	0.369–0.992	0.047
Cycles of first line chemotherapy (>2 vs. 2)	0.230	0.117–0.455	0.000		0.228	0.116–0.452	0.000

PFS, progression-free survival; HR, hazard ratio; CI, confidence interval; aTS, albumin-bound paclitaxel and S-1; SOX, standard S-1 and oxaliplatin.