Printer Friendly

Psychiatric illness associated with nonadherence to antiepileptics.

SEATTLG -- Epileptic children are less likely to take antiepileptic drugs as prescribed if they also have psychiatric illnesses, according to a review of an administrative claims database.

"It's well established that nonadherence to prescribed antiepileptic drugs has serious potential consequences, including exacerbation of seizures, morbidity, and, now we are learning, even potentially mortality" said Dr. Alan B. Ettinger, a neurologist at the Comprehensive Epilepsy Center at North Shore Long Island Jewish Medical Center, New Hyde Park, N.Y. "Establishing a possible relationship between these issues--psychiatric comorbidity and adherence--really has practical utility because if this is the case, then clinicians need to use some special interventions to try to promote better adherence."

Using a PharMetrics administrative claims database, Dr. Ettinger and his colleagues reviewed claims for January 2000 through December 2006 for more than 50 million individuals covered by U.S. managed care plans.

The researchers found 5,343 children aged 4-18 years who had a diagnosis of epilepsy, received at least one prescription for an antiepileptic drug (AED), and were enrolled in their health plan for at least 1 year before and 1 year after starting the medication. There were slightly more boys than girls (55%), and about half of the children were 11 years old or younger.

Fully 65% of the children were nonadherent to their AED therapy. The children's mean medication possession ratio, a measure of adherence, was 0.54. Children with a ratio of less than 0.8 were considered nonadherent. The ratio was calculated by dividing the total number of days for which AEDs were supplied during the 1-year follow-up period by 365 days, Dr. Ettinger said at the annual meeting of the American Epilepsy Society.

Nearly half of the children had a psychiatric illness, as diagnosed by any physician, said Dr. Ettinger.

The most common were attention-deficit/hyperactivity disorder (17%) and attention deficit disorder (10%). But sizable proportions of children had more serious psychiatric illnesses, such as bipolar disorder (8%), developmental disorders (5%), schizophrenia (1%), or other psychoses (7%).

In multivariate analyses that took into account age, sex, geographic region, overall comorbidity burden, type of AED (newer vs. older), starting regimen (monotherapy vs. combination therapy), and initial AED dosing (one or fewer pills daily vs. more), children were significantly more likely to be nonadherent if they had a diagnosis of attention-deficit/hyperactivity disorder or bipolar disorder before starting AED therapy (odds ratios, 1.17 and 1.22, respectively) and if they received a diagnosis of bipolar disorder after starting AED therapy (odds ratio, 1.37).

Schizophrenia alone was not associated with elevated odds of nonadherence. But relative to their counterparts who did not have any of the more serious psychiatric illnesses, children who had at least one of them (regardless of type) were significantly more likely to be nonadherent (odds ratio, 1.15).

"Recognizing psychiatric comorbidity in pediatric patients with epilepsy is very important, and we hope that this study lends another compelling reason why clinicians need to be screening for psychiatric comorbidity," concluded Dr. Ettinger, who reported that he is a project consultant for GlaxoSmithKline.

The most common psychiatric illnesses among the 5,343 children whose claims were reviewed were ADHD and attention deficit disorder.
COPYRIGHT 2009 International Medical News Group
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2009 Gale, Cengage Learning. All rights reserved.

Article Details
Printer friendly Cite/link Email Feedback
Author:London, Susan
Publication:Clinical Psychiatry News
Date:Oct 1, 2009
Previous Article:Quetiapine shows efficacy for PTSD in short-term trial.
Next Article:Guanfacine gets the nod as once-daily therapy for ADHD.

Related Articles
Brain differences seen in children with major depression. (Amygdala, White and Gray Matter).
We must get the word out about psychiatry.
Advocacy: why wait?
Psychiatric hospitalization up 40% for kids, 39% for teens.
Most teens with IBD have psych disorders.
Psychiatric aspects of chronic physical illness in adolescence: significant numbers of chronically ill adolescents have problems coping with their...
Resident's guide to clinical psychiatry.
Psychiatrists coordinate care under new model.
Arab Women of the year 2008 (Community).
FDA panel deems atypicals safe for children, teens: three antipsychotics also 'effective.'.

Terms of use | Privacy policy | Copyright © 2019 Farlex, Inc. | Feedback | For webmasters