- Treatment of attention deficit hyperactivity disorder in children: Predictors of treatment outcome
- European Child & Adolescent Psychiatry
- Number of pages
- Document type
- Faculty of Social and Behavioural Sciences (FMG)
- Psychology Research Institute (PsyRes)
Objective: The present study investigated the predictive power of anxiety, IQ, severity of
ADHD and parental depression on the outcome of treatment in children with ADHD. Method: Fifty children with ADHD (ages 8-12) were randomized to a 10-week treatment of methylphenidate or to a treatment of methylphenidate combined with multimodal behavior therapy. Prior to treatment predictors were assessed. Outcome was assessed separately
for parents and teachers on a composite measure of inattentive, hyperactive, oppositional- and conduct disorder symptoms.
Results: There was neither a significant difference between the two treatments at baseline nor did treatment condition predict outcome. Therefore the data were collapsed across the two treatments. A combination of anxiety and IQ predicted teacher-rated outcome, explaining 18% of the variance. Higher anxiety and higher IQ’s indicated better treatment
outcome. There were no significant predictors of the parent-rated outcome.
Conclusions: This study showed a small but significant predictive effect of IQ and anxiety on treatment outcome in children with ADHD. Clinical implications: This study supports
the idea that for the treatment of ADHD children with comorbid anxiety and higher IQ respond better to the two most used treatments for ADHD.
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