Table 1 Multivariate analysis of cohort A for event-free survival (EFS), relapse- free survival (RFS), and overall survival (OS)

 PVR expression

1.68

1.14–2.47

0.009

 Karyotype

3.05

1.99–4.66

<0.001

 PVR expression

2.18

1.40–3.40

0.001

 Karyotype

2.35

0.40–3.95

0.001

 PVR expression

1.52

1.04–2.23

0.032

 Karyotype

2.63

1.63–4.24

<0.001

 PVRL2 expression

1.16

0.95–1.42

0.150

 Karyotype

2.95

1.92–4.55

<0.001

 PVRL2 expression

1.30

1.05–1.61

0.017

 Karyotype

2.19

1.29–3.72

0.004

 PVRL2 expression

1.17

0.98–1.40

0.087

 Karyotype

2.52

0.95–3.10

<0.001