Table 1.

Characteristics of the 97 neuroblastoma patients analyzed in this study^*

Characteristics	Value
Mean age at diagnosis,† (±SD; range), mo	51.6 (±66.7; 0–420)
Tissue sampling relative to chemotherapy, No.
After	10
Before	84
ND	3
Stage or histology, No.
Stage IV	44
Stage III	7
Stage IIA/B	9
Stage I	3
Stage IVS	3
Ganglioneuroblastoma	5
Ganglioneuroma	1
ND	25
MYCN amplification
Yes	15
No	60
ND	22

^*ND = not determined.

^†The age was unknown for 18 of the 97 patients.