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Journal of Autism and Developmental Disorders

Gepubliceerd in:

01-03-2009 | Original Paper

The Incidence of Clinically Diagnosed Versus Research-Identified Autism in Olmsted County, Minnesota, 1976–1997: Results from a Retrospective, Population-Based Study

Auteurs: William J. Barbaresi, Robert C. Colligan, Amy L. Weaver, Slavica K. Katusic

Gepubliceerd in: Journal of Autism and Developmental Disorders | Uitgave 3/2009

Abstract

Autism prevalence studies have often relied on administrative prevalence or clinical diagnosis as case-identification strategies. We report the incidence of clinical diagnoses of autism spectrum disorders (ASD), versus research-identified autism among residents of Olmsted County, Minnesota, age ≤21 years, from 1976–1997. The incidence of clinically diagnosed ASD (with 95% CI) was 1.5 per 100,000 (0.0–3.7) in 1980–1983 and 33.1 (22.8–43.3) in 1995–1997, a 22.1-fold increase. In contrast, the incidence of research-identified autism increased from 5.5 (1.4–9.5) per 100,000 to 44.9 (32.9–56.9), an 8.2-fold increase. Only 46.8% of research-identified cases received a clinical diagnosis of ASD. These findings demonstrate the potential for misleading interpretation of results from epidemiologic studies that rely on clinical diagnosis of autism to identify cases.

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Titel: The Incidence of Clinically Diagnosed Versus Research-Identified Autism in Olmsted County, Minnesota, 1976–1997: Results from a Retrospective, Population-Based Study
Auteurs: William J. Barbaresi
Robert C. Colligan
Amy L. Weaver
Slavica K. Katusic
Publicatiedatum: 01-03-2009
Uitgeverij: Springer US
Gepubliceerd in: Journal of Autism and Developmental Disorders / Uitgave 3/2009
Print ISSN: 0162-3257
Elektronisch ISSN: 1573-3432
DOI: https://doi.org/10.1007/s10803-008-0645-8

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