PEDIATRICS Vol. 108 No. 1 July 2001, pp. 71-78
Received Jul 13, 2000; accepted Dec 19, 2000.
,
, and
From the * Division of General Pediatrics, University of
Washington School of Medicine, Seattle; Background. Despite an increasing
prevalence of diagnosed attention-deficit/hyperactivity disorder (ADHD)
among children, the impact of ADHD on utilization and costs of health
care services is largely unknown.
Objective. To examine differences in health care
utilization and costs between children with and without ADHD.
Design. Retrospective matched cohort study conducted from
January 1 to December 31, 1997.
Setting. Health maintenance organization in western
Washington State.
Participants. Children aged 3 through 17 years who were
continuously enrolled in the health maintenance organization and used
services during 1997 were eligible. Children were identified with ADHD
if they had a diagnosis of ADHD or a prescription for a stimulant
medication using automated patient files. Children without ADHD were
randomly selected as controls and matched 4:1 to children with ADHD on age and sex.
Outcome Measure. Utilization and costs of specific
categories of health care services.
Results. A total of 2992 children (5.2%) were identified
with ADHD. Children with ADHD incurred significantly greater per capita
total costs ($1465 vs $690) than children without ADHD. Children with ADHD had 9.9 times more outpatient mental health visits (1.35/year vs
0.14/year), 3.4 times more pharmacy fills (11.25/year vs 3.30/year), and 1.6 times more primary care visits (3.84/year vs 2.36/year) than
children without ADHD. The adjusted incremental costs were estimated to
be $375 (95% confidence interval: $336-$416) for children with ADHD
alone and $812 (95% confidence interval: $671-$973) for children with
ADHD plus coexisting mental health disorders.
Conclusions. Children with ADHD use significantly more
health care resources and incur significantly higher costs than
children without ADHD. Coexisting mental health disorders substantially
increase the cost of treating ADHD. Resource allocation decisions
should consider the contributions of primary care, outpatient mental health, and pharmacy costs to the overall costs of care for children with ADHD.
Center for Health Studies,
Group Health Cooperative of Puget Sound, Seattle, Washington;
§ Department of Health Services, University of Washington School of
Public Health and Community Medicine, Seattle; and
Center for
Attention Deficit Disorders, Group Health Cooperative of Puget Sound,
Redmond, Washington.
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