Treatment results in age subgroups by gender (ALL-BFM 86 and 90).

A: 10y-probability for event-free survival (pEFS) in female ALL patients (SE, standard error)

Log-rank: P < 0.01, except for: < 1y vs 10–14y: P = 0.04; 6–9y vs 10–14y: P = 0.03; 6–9y vs. 15–18y: P = 0.02; 10–14y vs. 15–18y, and < 1y vs 15–18y: P = n.s.

B: 10y-pEFS in male ALL patients

Log-rank: P < 0.01, except for: 6–9y vs 10–14y: P = 0.01; 6–9y and 10–14y vs 15–18y: P = n.s.