TABLE 3.

Multivariate analysis for survival according to stages

Stage II-III					Stage IV
		HR	95.0% CI	p			HR	95.0% CI	p
ECOG PS	3–4 vs. 0–2	6.138	1.212–31.075	0.028	ECOG PS	3–4 vs. 0–2	3.313	1.141–9.693	0.004
Surgery	Yes vs. no	0.229	0.092–0.570	0.002	Grade	III vs. I-II	3.397	1.551–7.439	0.002
Stage	III vs. II	3.195	1.111–9.183	0.031	Liver metastasis	Yes vs. no	2.537	1.134–5.672	0.023
Recurrence	Yes vs. no	24.128	6.455–90.180	<0.001	CT vs. BSC		0.156	0.069–0.348	<0.001

CI: Confidence interval; CT: Chemotherapy; BSC: Best supportive care; ECOG PS: Eastern Cooperative Oncology Group Performance Status; HR: Hazard ratio.