Table 3. Results of univariate and multivariate Cox regression analysis for PFS (univariate analysis of the significant variables).

Variables	Progression
	Univariate				Multivariate
	HR	95% CI	P value		HR	95% CI	P value
Types of pathology	1.953	1.180–3.231	0.009*		2.103	1.237–3.576	0.006*
ECOG PS
2	1				1
1	0.096	0.024–0.388	0.001*		0.099	0.024–0.411	0.001*
0	0.177	0.052–0.601	0.006*		0.221	0.062–0.794	0.021*
CEA6W	1.758	1.066–2.900	0.027*		1.810	1.091–3.003	0.022*
PLT12W	1.754	1.044–2.918	0.034*		1.607	0.995–2.703	0.074

*, P<0.05. PFS, progression-free survival; ECOG PS, Eastern Cooperative Oncology Group performance status; CEA, carcinoembryonic antigen; PLT, platelet; HR, hazard ratio; CI, confidence interval.