[Retracted] A Comparison between Three-Dimensional Visualization Guided Hepatectomy and Ultrasonography Guided Radiofrequency Ablation in the Treatment of Small Hepatocellular Carcinoma within the Milan Criteria

Table 6

Univariate and multivariate analyses for overall survival.

Variables	Univariate analysis		Multivariate analysis
	Score	p value	HR (95% CI)	p value
Survival
Intervention (RFA versus SR)	14.118	<0.001	2.769 (1.789–4.286)	<0.001
Hepatitis virus infection	6.798	0.079
HBV	6.598	0.010
HCV	2.421	0.120
Both HBV and HCV	0.531	0.466
Liver cirrhosis	1.968	0.161
Diameter (cm)	2.947	0.086	2.166 (1.656–2.835)	<0.001
Tumor number	61.910	<0.001	5.128 (3.548–7.413)	<0.001
AFP (≥400 μg/L versus <400 μg/L)	10.157	0.001	1.871 (1.229–2.847)	0.003
Child-Pugh (B versus A)	5.201	0.023

HR: hazard ratio; SR: three-divisional visualization system-guided surgical resection; RFA: radiofrequency ablation; HBV: hepatitis B virus; HCV: hepatitis B virus; AFP: α-fetoprotein.