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Table 5 Comparison of the new risk stratification system and the previous classification systems

From: A new risk-stratification system for hepatoblastoma in children under six years old and the significance for prognosis evaluation—a 14-year retrospective study from a single center

Risk stratification system

n

Ratio(%)

N of death

Survival rate(%)

SIOPEL collaboration groups

 Standard-risk group

261

68.3

28

90.4

 High-risk group

121

31.7

51

57.9

COG collaboration groups

 Extremely low risk group

10

2.6

0

100

 Low risk group

86

22.5

3

96.5

 Moderate risk group

114

29.9

17

85.1

 High risk group

172

45.0

59

65.7

New risk stratification system

 Low risk group

138

36.1

5

96.4

 Moderate risk group

163

42.7

25

84.7

 High risk group

81

21.2

49

39.5