Table 1.

Characteristics of the neuroblastoma patients datasets

Risk factors		Training seta		Independent test setb
		Patients	Distribution (%)C	Patients	Distribution (%)C
Age at diagnosis (Years)
	<1	86	47	26	51
	≥1	96	53	25	49
INSS stage
	1	42	23	13	25
	2	24	13	7	14
	3	23	13	11	21
	4	69	38	16	32
	4s	24	13	4	8
MYCN status
	normal	152	84	40	79
	amplified	30	16	11	21
Outcome
	Good	131	72	41	80
	Poor	51	28	10	20
Risk Group d
	LR	94	52	27	53
	IR	21	11	8	15
	HR	67	37	16	32

^a The total number of patients is 182. The number of patients in each subdivision is shown.

^b The total number of patients is 51. The number of patients in each subdivision is shown.

^c Percentage relative to the total number of patients.

^d The risk assessment is based on INRG classification. HR = High Risk; IR = Intermediate Risk; LR = Low Risk.