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  • Title: Varying the wear time of the methylphenidate transdermal system in children with attention-deficit/hyperactivity disorder.
    Author: Wilens TE, Boellner SW, López FA, Turnbow JM, Wigal SB, Childress AC, Abikoff HB, Manos MJ.
    Journal: J Am Acad Child Adolesc Psychiatry; 2008 Jun; 47(6):700-708. PubMed ID: 18434918.
    Abstract:
    OBJECTIVE: Children with attention-deficit/hyperactivity disorder often have varying needs for coverage of their symptoms throughout the day. The objectives of this study were to determine the efficacy, duration of action, and safety of methylphenidate transdermal system worn for variable times by children (ages 6-12) diagnosed with ADHD. METHOD: Methylphenidate dose was optimized over 5 weeks using 10-, 15-, 20-, or 30-mg patches worn for 9 hours. The efficacy of 4- and 6-hour wear times was then assessed in an Analog Classroom setting during a randomized, placebo-controlled, double-blind, three-way crossover phase. The main efficacy measures were the Swanson, Kotkin, Agler, M-Flynn, and Pelham Rating Scale deportment scale and the Permanent Product Measure of Performance math test. RESULTS: All of the efficacy measures indicated that 4- and 6-hour wear times improved ADHD symptoms and that medication effects on the Swanson, Kotkin, Agler, M-Flynn, and Pelham Rating Scale deportment scale and Permanent Product Measure of Performance math test decreased between 2 and 4 hours after patch removal. The majority of adverse events were transient and mild to moderate in severity. CONCLUSIONS: These findings suggest that the duration of medication effect is related to the wear time of the patch and may be tailored to accommodate the schedules of patients.
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