IngentaConnect The Effect of Pharmacotherapy for Attention Deficit Hyperactivity...

Authors: McAfee, Andrew T.; Holdridge, Karen C.; Johannes, Catherine B.; Hornbuckle, Kenneth; Walker, Alexander M.

Source: Current Drug Safety, Volume 3, Number 2, May 2008 , pp. 123-131(9)

Publisher: Bentham Science Publishers

Abstract:

Purpose: To estimate the rate of new-onset seizure in ADHD patients in relation to ADHD pharmacotherapy.

Methods: A retrospective cohort study of 34,727 patients, ages 6 to 17, with at least two insurance claims bearing ADHD diagnoses during 2003 in the United Healthcare database. Incidence of seizure was calculated for observation time during treatment with atomoxetine and stimulants/bupropion.

Results: Seizure incidence among ADHD patients was 4.5/1,000 person-years (p-y; 95% confidence interval 3.7 - 5.5). ADHD patients who received any ADHD medication had an incidence of 3.8/1,000 p-y (3.0 - 4.8) compared to 8.7 (5.8 - 12.4) for patients who did not receive any ADHD medication. The relative risk (RR) for current vs non-use of atomoxetine was 1.1 (0.6 - 2.1). For stimulants and bupropion, the RR for current vs non-use was 0.8 (0.6 - 1.3). Elevated seizure risks were found in association with central nervous system (CNS) disease (OR 3.9, 1.2 - 10.9), CNS medications (OR 2.2, 1.3 - 3.6), metabolic disease (OR 2.9, 1.1 - 6.8), and psychiatric disease risk factors (OR 1.7, 1.1 - 2.6).

Conclusions: In this study, there was no statistically significant association between use of atomoxetine or stimulants and seizure risk in children ages 6 to 17 years with ADHD and without prior seizure disorder.

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The Effect of Pharmacotherapy for Attention Deficit Hyperactivity Disorder on Risk of Seizures in Pediatric Patients as Assessed in an Insurance Claims Database