Table 2.

Independent prognostic factors for OS by multivariate analyses in ZZU HCC cohort 2

Univariate analysis	Relative risk	95% CI	P value
TNM (III and IV vs. I and II)	2.692	1.750–4.139	<0.001
Vascular invasion (Present vs. Absent)	1.081	0.619–1.888	0.042
PLK-4 expression (High vs. Low)	1.877	1.267–2.780	0.002

Bold values indicate statistical significance, P < 0.05