[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 5

Correlation analysis of variables relevant to overall survival and recurrence-free survival.

	Overall survival (months)		Recurrence-free survival (months)
Variable	Related coefficient	p value	Related coefficient	p value
Intervention	−0.325	<0.001^△	−0.312	<0.001^△
Gender	−0.024	0.735	0.002	0.981
Tumor number	−0.590	<0.001	−6.16	<0.001
PLT	−0.056	0.437	−0.076	0.290
PT	−0.031	0.671	−0.005	0.941
Hepatitis	0.005	0.945	−0.009	0.900
AFP	−0.165	0.022^⋄	−0.209	0.004^△
Cirrhosis	−0.179	0.012^⋄	−0.123	0.087
Child-Pugh class	−0.206	0.004^△	−0.164	0.023^⋄
Alcoholism	0.050	0.489	−0.008	0.908
Tumor diameter	−0.381	<0.001	−0.340	<0.001
Tumor recurrence	−0.234	0.001^△	—	—
Age (years)^#	−0.096	0.185	−0.059	0.414
ALT (μ/L)^#	0.078	0.280	0.087	0.226
AST (μ/L)^#	0.037	0.612	0.059	0.441
Tbi (μmol/L)^#	0.074	0.305	0.047	0.513
ALB (g/L)^#	0.072	0.321	0.047	0.517
Hb (g/L)^#	0.042	0.559	0.004	0.957

Spearman correlation coefficient; ^#Pearson correlation coefficient; partial correlations: diameters/tumor number were controlled while tumor number/diameters were analyzed. ^ΔCorrelation is significant at the 0.01 level (2-tailed). Correlation is significant at the 0.01 level (2-tailed). PLT: platelet; PT: prothrombin time; AFP: α-fetoprotein; ALT: alanine aminotransferase; AST: aspartate aminotransferase; Tbil: total bilirubin; ALB: albumin; Hb: hemoglobin.