Table 3. Cox multivariate analyses of prognostic factors on overall survival.

Variable	β	SE	Hazard ratio (95%CI)	P value
Tumor multiplicity	0.141	0.266	1.152 (0.683–1.942)	0.596
Tumor size	0.116	0.213	1.124 (0.740–1.706)	0.585
AFP	0.750	0.229	2.117 (1.352–3.316)	0.001
Differentiation	−0.020	0.197	0.981 (0.667–1.442)	0.921
Vascular invasion	0.519	0.219	1.680 (1.093–2.582)	0.018
Stage	0.954	0.344	2.596 (1.322–5.100)	0.006
Relapse	0.807	0.219	2.241 (1.459–3.443)	0.000
SIRT3	−0.588	0.245	0.555 (0.344–0.897)	0.016

β, Regression coefficient; SE, standard error; CI, confidence interval; AFP, alpha-fetoprotein.