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Prevalence
About 1% of children in the South Thames region have an autistic spectrum disorder

http://dx.doi.org/10.1136/ebmh.10.1.28

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    Baird G, Simonoff E, Pickles A, et al. Prevalence of disorders of the autism spectrum in a population cohort of children in South Thames: the Special Needs and Autism Project (SNAP). Lancet 2006;368:210–15.OpenUrlCrossRefPubMedWeb of Science

    Q How common are autism and autism-related spectrum disorders in children in the South Thames region of the UK?

    METHODS

    Embedded ImageDesign:

    Prospective cohort study.

    Embedded ImageSetting:

    Twelve districts, South Thames, UK; time period of assessment not stated.

    Embedded ImagePopulation:

    56 946 children born between 1 July 1990 and 31 December 1991 in South Thames (mean age at assessment 12 years, range 9.8–14.4 years).

    Embedded ImageAssessment:

    Children with an autistic spectrum disorder (ASD) or with social and communicative impairment were identified from the child health and speech and language therapy services registers. Children with a possible undiagnosed ASD (defined as those having a statement of special educational needs) were identified using the special needs register. All 1770 children identified in this survey received the social communication …

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    Footnotes

    • For correspondence: Professor Gillian Baird, Newcomen Centre, Guy’s Hospital, London, UK; gillian.baird{at}gstt.nhs.uk

    • Sources of funding: Wellcome Trust and Department of Health, UK.