Table 4.

Multivariable Cox proportional hazards model for overall survival.

Variable	HR	P Value
Treatment group
TACE+RFA-S vs TACE-S (reference)	0.67 (0.33, 1.34)	0.256
Type of PVTT
Type II vs Type I (reference)	2.43 (0.57, 10.27)	0.228
Level of AFP (ng/ml)
≥400 vs <400 (reference)	1.82 (0.90, 3.68)	0.096
Tumor encapsulation
Yes vs no (reference)	0.39 (0.16, 0.99)	0.047
Objective response
Yes vs no (reference)	0.23 (0.11, 0.45)	<0.001

Numbers in parentheses are the 95% confidence interval. An objective response is defined as achieving a complete or partial response based on the modified Response Evaluation Criteria for Solid Tumors.

RFA, radiofrequency ablation; TACE, transarterial chemoembolization; S, sorafenib; HR, hazard ratio; CI, confidence interval; AFP, α-fetoprotein.