Adaptive skills are useful for evaluating the effect of pharmacological treatment in children with attention-deficit/hyperactivity disorder.

Aim: There are few long-term studies of adaptive functions as an outcome measure of pharmacological treatment in attention-deficit/hyperactivity disorder (ADHD). This study assessed the adaptive abilities of children with ADHD before and after several years of pharmacological treatment.

Method: We studied 12 children with a mean age of 15 years - seven boys and five girls - who had continued pharmacological treatment for ADHD for more than four years. The Adaptive Behaviour Assessment Scales - Second Edition ratings by their teachers were compared before and after they had received treatment for ADHD.

Results: On a group level, the conceptual, practical and general adaptive composite domains improved significantly between the baseline and follow-up study. There were clear individual variations: more than half of the group increased from an adaptive level far below average to average, a minority displayed no major changes, and one individual deteriorated. The girls tended to have better outcomes than the boys.

Conclusion: This study was nonrandomised and only analysed within-group changes in a small number of participants. However, the findings suggest that four to five years of stimulant treatment had markedly positive effects on adaptive functioning in more than half of the school-age children with ADHD.