Table 4.

Leukemia-free survival by risk group in the training and validation subsets

	Training subset			Validation subset Brier score*
Risk group	n	HR (95% CI)	P	n	HR (95% CI)	P
AML
Low	34	1.00	<.0001	29	1.00	<.0001
Intermediate	291	1.91 (0.93-3.91)	.0764	308	3.05 (1.25-7.45)	.0114
High	144	3.22 (1.56-6.662)	.0016	138	4.87 (1.97-12.02)	.0006
Very high	93	5.65 (2.72-11.73)	<.0001	92	8.10 (3.26-20.11)	<.0001
ALL
Low	238	1.00	<.0001	227	1.00	<.0001
Intermediate	364	1.56 (1.19-2.04)	.0014	379	1.72 (1.29-2.28)	.0002
High	42	2.90 (1.88-4.48)	<.0001	30	3.55 (2.15-5.85)	<.0001

n, number evaluable.

^*AML, 0.154; ALL, 0.152.