Table 2.

Multivariate analysis of factors associated with RFS and OS in younger group

	Hazard ratio (95% CI)	P-value
RFS
AFP level (0=<400 ng/mL, 1=≥400 ng/mL)	1.709 (1.034–2.825)	0.036
Microvascular invasion (0= negative, 1= positive)	1.955 (1.125–3.399)	0.017
Tumor size (0=≤5 cm, 1=>5 cm)	3.286 (1.947–5.545)	<0.001
OS
Microvascular invasion (0= negative, 1= positive)	2.448 (1.470–4.079)	0.001
Tumor size (0=≤5 cm, 1=>5 cm)	3.138 (1.868–5.269)	<0.001

Abbreviations: AFP, alpha-fetoprotein; CI, confidence interval; OS, overall survival; RFS, recurrence-free survival.