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Epidemiology of Pervasive Developmental Disorders 

Epidemiology of Pervasive Developmental Disorders
Chapter:
Epidemiology of Pervasive Developmental Disorders
Author(s):

Eric Fombonne

, Sara Quirke

, and Arlene Hagen

DOI:
10.1093/med/9780195371826.003.0007
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date: 17 December 2017

This chapter provides an up-to-date review of the methodological features and substantive results of published epidemiological surveys of the prevalence of pervasive developmental disorders (PDD). The specific questions addressed are: What is the range of prevalence estimates for autism and related pervasive developmental disorders, and what are the correlates of PDD in epidemiological surveys? What interpretation can be given to time trends observed in prevalence rates of PDDs? From recent studies, a best estimate of 70/10,000 (equivalences = 7/1,000; or 0.7%; or 1 child in about 143 children) can be confidently derived for the prevalence of autism spectrum disorders.

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