		Low Risk		Intermediate Risk		High Risk		p value
		n	%	n	%	n	%	p value
Gender	Female	1	5.0	10	50.0	9	45.0	>0.05 (NS)
Gender	Male	7	31.8	7	31.8	8	36.4	>0.05 (NS)
Age (yr)	<1 yr	7	43.8	9	56.3	0	.0	<0.05 (Sig)
	≥1 yr	1	3.8	8	30.8	17	65.4	<0.05 (Sig)
	Median (min, max)	4.0 (0, 15)		11.0 (2, 91)		26.0 (14, 75)		<0.05 (Sig)
Tumor location	Mediastinum	0	0	1	50.0	1	50.0	>0.05 (NS)
	Retroperitoneal	1	11.1	5	55.6	3	33.3
	Adrenal	7	26.9	6	23.1	13	50.0
	Liver	0	0	2	100.0	0	.0
	Paravertebral	0	0	3	100.0	0	.0
Diagnosis	Ganglioneuroma	0	0	2	100.0	0	.0	>0.05 (NS)
	Ganglioneuroblastoma	0	0	4	66.7	2	33.3
	Neuroblastoma	8	23.5	11	32.4	15	44.1
LDH Grade	Not done	1	100.0	0	0	0	0	<0.05 (Sig)
	>1*Normal	7	38.9	8	44.4	3	16.7
	>2*Normal	0	0	5	83.3	1	16.7
	>3*Normal	0	0	2	66.7	1	33.3
	>4*Normal	0	0	1	100.0	0	0
	>5*Normal	0	0	1	7.7	12	92.3
	Median (min, max)	315.0 (272, 446)		480.0 (269, 7666)		1452.0 (315, 5963)		<0.05 (Sig)
Urine catecholamines	Negative	1	9.1	5	45.5	5	45.5	>0.05 (NS)
	Positive	5	21.7	10	43.5	8	34.8
	Not done	2	25.0	2	25.0	4	50.0
Extent of surgery	Biopsy	1	8.3	7	58.3	4	33.3	>0.05 (NS)
	Gross Total Resection	7	29.2	7	29.2	10	41.7
	Partial Resection	0	0	3	60.0	2	40.0
	Not done	0	0	0	0	1	100.0
ASCT	Yes	0	0	1	8.3	11	91.7	<0.05 (Sig)
	No	8	29.6	16	59.3	3	11.1
	Not done	0	0	0	0	3	100.0
Spinal Involvement	Yes	0	0	4	100.0	0	.0	<0.05 (Sig)
Spinal Involvement	No	8	21.1	13	34.2	17	44.7	<0.05 (Sig)
Metaiodobenzyl-guanidine (mIBG) scan	Negative	3	60.0	2	40.0	0	.0	>0.05 (NS)
	Positive	5	13.9	14	38.9	17	47.2
	Not done	0	0	1	100.0	0	0