Table 3 Univariate analysis of clinical features and risk score with Cox proportional hazard model

Age (< 65 vs. ≥ 65)

1.288 (0.904–1.834)

Gender (female vs. male)

1.183 (0.823–1.7)

BMI (< 25 vs. ≥ 25)

1.146 (0.792–1.659)

Histological grade

 G1

1

 G2

1.137 (0.67–1.93)

 G3

1.202 (0.689–2.095)

 G4

1.641 (0.606–4.442)

Clinical stage

 Stage I/II

1

 Stage III/IV

2.463 (1.691–3.589)

T stage

 T1/2

1

 T3/4

2.594 (1.813–3.710)

AFP (< 300 vs. ≥ 300)

1.018 (0.615–1.685)

Vascular invasion

 None

1

 Mico

0.833 (0.519–1.337)

 Macro

1.284 (0.516–3.193)

Risk (high vs. low)

2.723 (1.874–3.956)