Author:
Baron-Cohen Simon,Scott Fiona J.,Allison Carrie,Williams Joanna,Bolton Patrick,Matthews Fiona E.,Brayne Carol
Abstract
BackgroundRecent reports estimate the prevalence of autism-spectrum conditions in
the UK to be 1%.AimsTo use different methods to estimate the prevalence of autism-spectrum
conditions, including previously undiagnosed cases, in
Cambridgeshire.MethodWe carried out a survey of autism-spectrum conditions using the Special
Educational Needs (SEN) register. A diagnosis survey was distributed to
participating schools to be handed out to parents of all children aged
5–9 years. The mainstream primary school population was screened for
unknown cases.ResultsThe prevalence estimates generated from the SEN register and diagnosis
survey were 94 per 10 000 and 99 per 10 000 respectively. A total of 11
children received a research diagnosis of an autism-spectrum condition
following screening and assessment. The ratio of known:unknown cases is
about 3:2 (following statistical weighting procedures). Taken together,
we estimate the prevalence to be 157 per 10 000, including previously
undiagnosed cases.ConclusionsThis study has implications for planning diagnostic, social and health
services.
Publisher
Royal College of Psychiatrists
Subject
Psychiatry and Mental health
Cited by
670 articles.
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