Table 3.

Cox Regression Analysis of Progression-Free Survival (PFS)

Group	P	HR	95% CI
ECOG PS	0.003	0.308	0.141–0.673
≤1 vs 2
Liver metastases	0.000	0.197	0.079–0.489
No vs yes

Abbreviations: HR, hazard ratio; CI, confidence interval; ECOG PS, Eastern Cooperative Oncology Group performance status.