Document Detail


Cardiovascular safety of ADHD medications: rationale for and design of an investigator-initiated observational study.
MedLine Citation:
PMID:  20623519     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: To describe the design and rationale of an investigator-initiated observational study to examine the cardiovascular safety of the following commonly-used medications to treat attention deficit hyperactivity disorder (ADHD): amphetamines, methylphenidate, and atomoxetine.
METHODS: We are conducting an observational cohort study using data from five large Medicaid programs and the HealthCore Integrated Research Database (HIRD(SM)), which is derived from administrative data from commercial health plans. Our primary outcomes of interest are (1) sudden death/ventricular arrhythmia, (2) stroke, (3) myocardial infarction, and (4) stroke or myocardial infarction as a composite outcome. These claims diagnoses have been previously validated in adults, and the positive predictive value in children will be examined as part of this study. Secondary outcomes are (1) all-cause death, (2) non-suicide death, and (3) non-accident death. All design decisions have been made to minimize bias toward the null. Based on our pilot data, we expect to have at least 90% power to detect a minimum detectable hazard ratio (HR) of 3.0 in children and adolescents who initiate an ADHD medication for each outcome of interest (except for MI, for which the expected minimum detectable HR is 7.9). The expected minimum detectable HR is 1.7 for each outcome for adult incident ADHD medication users.
RESULTS: Forthcoming.
CONCLUSIONS: Potential limitations to this study include a low expected event rate in children and adolescents, potentially incomplete ascertainment of outcomes, and potential confounding by unmeasured variables. Nevertheless, this study will provide important information about the cardiovascular safety of ADHD medications.
Authors:
Sean Hennessy; Hedi Schelleman; Gregory W Daniel; Warren B Bilker; Stephen E Kimmel; James Guevara; Mark J Cziraky; Brian L Strom
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Pharmacoepidemiology and drug safety     Volume:  19     ISSN:  1099-1557     ISO Abbreviation:  Pharmacoepidemiol Drug Saf     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-09-02     Completed Date:  2010-12-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9208369     Medline TA:  Pharmacoepidemiol Drug Saf     Country:  England    
Other Details:
Languages:  eng     Pagination:  934-41     Citation Subset:  IM    
Copyright Information:
(c) 2010 John Wiley & Sons, Ltd.
Affiliation:
Center for Clinical Epidemiology and Biostatistics, and Department of Biostatistics & Epidemiology, University of Pennsylvania School of Medicine, Philadelphia, PA, USA. hennessy@upenn.edu
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adrenergic Uptake Inhibitors / adverse effects*,  therapeutic use
Amphetamines / adverse effects,  therapeutic use
Attention Deficit Disorder with Hyperactivity / drug therapy
Cardiovascular Diseases / chemically induced*,  epidemiology,  physiopathology
Central Nervous System Stimulants / adverse effects*,  therapeutic use
Child
Cohort Studies
Databases, Factual
Humans
Methylphenidate / adverse effects,  therapeutic use
Myocardial Infarction / chemically induced,  epidemiology
Propylamines / adverse effects,  therapeutic use
Research Design
United States / epidemiology
Chemical
Reg. No./Substance:
0/Adrenergic Uptake Inhibitors; 0/Amphetamines; 0/Central Nervous System Stimulants; 0/Propylamines; 113-45-1/Methylphenidate; 83015-26-3/atomoxetine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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