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Asperger syndrome--some epidemiological considerations: a research note.

I C Gillberg¹, C Gillberg

¹Department of Child and Adolescent Psychiatry, University of Göteborg, Sweden.

Journal of Child Psychology and Psychiatry, and Allied Disciplines

|July 1, 1989

Summary

Estimating Asperger syndrome prevalence, this study found minimum rates of 10-26 per 10,000 children with normal intelligence. A small percentage of teenagers also exhibited Asperger syndrome alongside mild intellectual disability.

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Area of Science:

Neurodevelopmental disorders
Pediatric psychology
Autism spectrum disorders

Background:

Asperger syndrome has been under-researched empirically.
Limited systematic studies exist on Asperger syndrome prevalence.
New data from Sweden offers insights into prevalence estimations.

Purpose of the Study:

To review existing literature on Asperger syndrome.
To present new data on Asperger syndrome prevalence in Sweden.
To estimate minimum prevalence rates in children and adolescents.

Main Methods:

Literature review of empirical studies on Asperger syndrome.
Analysis of new Swedish study data.
Prevalence estimation based on collected data.

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Main Results:

Minimum prevalence rates of 10-26 per 10,000 children with normal intelligence.
0.4 per 10,000 Swedish teenagers diagnosed with Asperger syndrome and mild mental retardation.
Highlights the need for further systematic inquiry into Asperger syndrome.

Conclusions:

Asperger syndrome prevalence is higher than previously thought, especially in children with typical intelligence.
A distinct subgroup of individuals with Asperger syndrome and mild intellectual disability exists.
Emphasizes the importance of continued research and accurate diagnosis of Asperger syndrome.