Published Online
on August 11, 2005

A more recent version of this article appeared on September 1, 2005

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Submitted on June 7, 2005
Accepted on June 30, 2005

Is It Time for a Large, Collaborative Study of Pediatric Stroke?

Darin B. Zahuranec MD; Devin L. Brown MD; Lynda D. Lisabeth PhD; and Lewis B. Morgenstern MD^*

From the Stroke Program (D.B.Z., D.L.B., L.D.L., L.B.M.), University of Michigan Medical School, Ann Arbor; and Department of Epidemiology (L.B.M.), University of Michigan School of Public Health, Ann Arbor.

^* To whom correspondence should be addressed. E-mail: LMorgens{at}umich.edu.

Background and Purpose--A 2002 report from the National Institute of Neurological Disorders and Stroke cited the critical importance of more childhood stroke studies. We present the incidence rate of pediatric stroke from a biethnic community-based project and calculate the population size required for future prospective studies of pediatric stroke.

Methods--This work is part of the Brain Attack Surveillance in Corpus Christi (BASIC) project. The community of 325 000 is located in southeast Texas and is composed of approximately equal numbers of Mexican Americans (MAs) and non-Hispanic whites (NHWs). Discharge diagnosis codes from all hospitals in the county were used to identify cases of childhood stroke (age >1 month and <20 years) in 2002 and 2003, and stroke cases were validated by source document review. On the basis of the incidence rates, the population size required to complete a case-control study to examine risk factors for pediatric stroke was calculated.

Results--Eight cases of pediatric stroke were identified, yielding an annual incidence rate of 4.3 per 100 000 (95% CI, 1.9 to 8.5). There were 5 cases of intracerebral hemorrhage, 1 subarachnoid hemorrhage, 1 ischemic stroke, and 1 transient ischemic attack. All of the events occurred in MAs. Depending on the prevalence of the risk factors of interest, future studies of pediatric stroke would have to draw from a population of up to 59 million children to complete a case-control study within 4 years.

Conclusions--Given the rarity of pediatric stroke, future studies will require multicenter efforts and possibly a national surveillance system.

Key words: child • incidence • stroke

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