Table 2.

Clinical and Demographic Characteristics

Characteristic	Risk Group				Total
	Early Relapse		Late Relapse
	No.	%	No.	%	No.	%
Median age, years	9.5		10.4		10.0
Range	1.6-21.4		4.3-21.1		1.6-21.4
Sex
Male	43	62	37	67	80	65
Female	26	38	18	33	44	35
Immunophenotype
B lineage	63	91	54	98	117	94
T lineage	6	9	1	2	7	6
Ph+
No	67	97	53	96	120	97
Yes	2	3	2	4	4	3
CNS disease
Negative	63	91	47	85	110	89
Positive	6	9	8	15	14	11
Ph+ and CNS
No	69	100	54	98	123	99
Yes	0	0	1	2	1	1
Total	69		55		124

Abbreviation: Ph, Philadelphia chromosome.