Demographic and hematologic characteristics of study and control cohort

N = 21N = 55P value
Age at diagnosis (mean [range])1.2 (3.0–12.2)8.5 (0.1–19.4)0.181
Gender, male (N [%])11 (52)31 (56)0.755
CNS statusN (%)N (%)
CNS 111 (52)31 (56)0.355
CNS 26 (29)17 (31)
CNS 31 (5)6 (11)
Missing2 (10)6 (11)
FAB classificationN (%)N (%)
M11 (5)7 (13)0.795
M24 (19)5 (9)
M42 (10)7 (13)
M59 (43)21 (38)
M71 (5)3 (5)
Missing2 (10)12 (22)