Efficacy and safety profiles by sex and age (6-9 vs 10-12 years) and magnitude and duration of effect by effect size overall and across the day of lisdexamfetamine dimesylate (LDX) vs placebo were assessed. | Efficacy and tolerability of lisdexamfetamine dimesylate in children with attention-deficit/ hyperactivity disorder: Sex and age effects and effect size across the day