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Reduction in a clinician-rated (CGI-S) and b parent- and teacher-rated ADHD symptoms (FBB-ADHD total score) from Visit 1 to Visit 3 in different previous medication subgroups, expressed as effect size (Cohen’s d). CGI–S Clinical Global Impressions–Severity, FBB-ADHD Fremdbeurteilungsbogen für Aufmerksamkeitsdefizit-Hyperaktivitätsstörung, IR immediate release, MR modified release, MPH methylphenidate, o.d. once daily
