Efficacy and Duration of Effect of Extended-Release Dexmethylphenidate Versus Placebo in Schoolchildren With Attention-Deficit/Hyperactivity Disorder
Abstract
Objective The aim of this study was to assess changes in symptomatology of attention-deficit/ hyperactivity disorder (ADHD) with extended-release dexmethylphenidate (d-MPHER) versus placebo in a laboratory classroom setting. Methods This double-blind, placebo-controlled, crossover study randomized 54 children 6-12 years of age, stabilized on methylphenidate 20-40 mg/day. Patients participated in a practice day, then received 5 days of treatment with d-MPH-ER 20 mg/day or placebo. After a 1-day wash-out, they returned to the classroom and received 1 dose of their assigned treatment. Evaluations occurred predose and at postdose hours 1, 2, 4, 6, 8, 9, 10, 11, and 12. Children were then crossed over to the alternate treatment, using identical protocol. Primary efficacy variable was the Swanson, Kotkin, Agler, M-Flynn, and Pelham rating scale (SKAMP)-Combined scores, and primary analysis time point was 1 hour postdose; secondary efficacy variables over 12 hours included SKAMP-Attention and -Deportment scores and written math test results. Safety was assessed by adverse event (AE) recording following each period. Vital signs were recorded at each visit; laboratory tests were conducted at screening and final visit. Results D-MPH-ER 20 mg/day showed a significant advantage over placebo as early as 1 hour postdose on SKAMP-Combined scores (p Conclusions D-MPH-ER is safe and effective and improves classroom attention, deportment, and performance in children with ADHD.
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The PERMP is a validated, time-sensitive, skill-adjusted math test that measures attention in ADHD.
“The PERMP is a validated, time sensitive, skill adjusted math test that measures attention in ADHD.”
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- Authors
- Silva, R. R., Muniz, R., Pestreich, L., Childress, A., Brams, M., Lopez, F. A., & Wang, J.
- Affiliations
- New York University (US)
- Novartis (United States) (US)
- Nevada Behavioral Health, Inc., Las Vegas, Nevada.
- Bayou City Research, Houston, Texas.
- Children’s Development Center, Maitland, Florida.
- Venue
- Journal of Child and Adolescent Psychopharmacology
- Publisher
- SAGE Publications
- Published
- 2006-06
- Volume
- 16
- Issue
- 3
- Pages
- 239-251
- ISSN
- 1044-5463 (ISSN-L)
- 1557-8992
- OpenAlex
- W2030446955
- Cited by
- 44
- References
- 30
- Citations by year
- 2025: 2 · 2023: 2 · 2018: 1 · 2017: 1 · 2016: 2 · 2015: 3 · 2013: 2 · 2012: 6
- FWCI
- 2.97
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Child and Adolescent Psychopharmacology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
- Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Pharmaceutical studies and practices
- Social Sciences › Psychology › Neuropsychology and Physiological Psychology › Developmental and Educational Neuropsychology
- Keywords
- attention deficit hyperactivity disorder, methylphenidate, stimulant medication, elementary school students, classroom attention, deportment, mathematics achievement, drug efficacy, drug safety, adverse events
- MeSH terms
- Central Nervous System Stimulants, Aptitude Tests, Attention Deficit Disorder with Hyperactivity, Child, Delayed-Action Preparations, Double-Blind Method, Female, Humans, Male, Mathematics, Methylphenidate, Psychiatric Status Rating Scales, Treatment Outcome, Cross-Over Studies, Dexmethylphenidate Hydrochloride
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