Table 3.

The univariate and multivariate analysis of factors related to progression free survival and overall survival

	Progression free survival			Overall survival
	Univariate (p value)	Multivariate (p value)	Hazard ratio (95%CI)	Univariate (p value)	Multivariate (p value)	Hazard ratio (95%CI)
Age: ≥ 70 vs < 70	0.195			0.638
Gender: male vs female	0.607			0.774
ECOG PS: 0 vs 1–2	0.435			0.866
Lesion number: single vs multiple	0.008	0.010	0.46 (0.26–0.83)	0.053	0.112	0.43 (0.15–1.22)
Histology: CRC vs others	0.496			0.935
Previous chemotherapy: yes vs no	0.378			0.927
Posterior chemotherapy: yes vs no	0.088	0.126	1.60 (0.88–2.93)	0.035	0.078	2.72 (0.90–8.27)

ECOG Eastern Cooperative Oncology Group, PS performance status, CRC colorectal cancer, CI confidence interval