when
youth treated for ADHD had significantly better outcomes than untreated
youth with ADHD. In studies where outcomes were compared to a pre-treatment baseline, improvement was reflected by significant gains relative to the baseline.
Results
Untreated ADHD outcomes - Across all studies and achievement test outcomes, youth with untreated ADHD had significantly lower scores than youth without ADHD for 75% of the outcomes. They were also lower for 79% of the academic performance outcomes.