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To the Editor.—
A recent study by the MTA Cooperative Group1 showed that a management based on drug medication or combined therapy (medication and behavioral modification) are superior to behavior modification alone in the treatment of attention-deficit/hyperactivity disorder (ADHD). The benefit of treatments was evaluated at 14 and 24 months. The results of this study are different from the results of the Canadian meta-analysis2 that showed unclear efficacy after 4 …
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