Study Status: Completed
Recruit Status: Completed
Study Type: Interventional
Official Title: Efficacy and Learning Skill After OROS Methylphenidate Treatment in Adolescents With Attention-Deficit/Hyperactivity Disorder: A 12-week, Mult
Brief Summary: The purpose of this study is to evaluate the efficacy, tolerability and effects of Osmotic Release Oral System (OROS) methylphenidate hydrochloride (HCl) on learning skill changes in Korean participants with Attention-Deficit Hyperactivity Disorder (ADHD).