Table 1. Characteristics of the patient cohort for this study.

	Sydney cohort		Excluded		Included		Included relapse
	n = 342		n = 89		n = 253		n = 53
Standard risk (n)	70	20%	16	18%	54	21%	4	8%
Medium risk (n)	231	68%	68	76%	163	64%	37	70%
High risk (n)	41	12%	5	6%	36	14%	12	23%
Males (n)	200	58%	51	57%	149	59%	37	70%
Females (n)	142	42%	38	43%	104	41%	16	30%
T-ALL (n)	40	12%	10	11%	30	12%	6	11%
prec B-ALL(n)	302	88%	79	89%	223	88%	47	89%
TELAML 1	67	20%	13	15%	54	21%	6	11%
Hyperdiploid>50	64	19%	21	24%	43	17%	7	13%
BCRABL 1	7	2%	0	0%	7	3%	2	4%
B other	164	48%	45	51%	119	47%	32	60%
Median age (yr)	4.8	1.0–17.9	4.0	1.0–17.9	5.0	1.0–17.3	8.2	1.8–17.3
Median WCC	10.3	0.1–547	7.7	0.7–514	11.7	0.1–547	16.4	1.8–17.3