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01-07-2008 | Original Paper

Trends in Autism Prevalence: Diagnostic Substitution Revisited

Auteurs: Helen Coo, Hélène Ouellette-Kuntz, Jennifer E. V. Lloyd, Liza Kasmara, Jeanette J. A. Holden, M. E. Suzanne Lewis

Gepubliceerd in: Journal of Autism and Developmental Disorders | Uitgave 6/2008

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Abstract

There has been little evidence to support the hypothesis that diagnostic substitution may contribute to increases in the administrative prevalence of autism. We examined trends in assignment of special education codes to British Columbia (BC) school children who had an autism code in at least 1 year between 1996 and 2004, inclusive. The proportion of children with an autism code increased from 12.3/10,000 in 1996 to 43.1/10,000 in 2004; 51.9% of this increase was attributable to children switching from another special education classification to autism (16.0/10,000). Taking into account the reverse situation (children with an autism code switching to another special education category (5.9/10.000)), diagnostic substitution accounted for at least one-third of the increase in autism prevalence over the study period.
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Metagegevens
Titel
Trends in Autism Prevalence: Diagnostic Substitution Revisited
Auteurs
Helen Coo
Hélène Ouellette-Kuntz
Jennifer E. V. Lloyd
Liza Kasmara
Jeanette J. A. Holden
M. E. Suzanne Lewis
Publicatiedatum
01-07-2008
Uitgeverij
Springer US
Gepubliceerd in
Journal of Autism and Developmental Disorders / Uitgave 6/2008
Print ISSN: 0162-3257
Elektronisch ISSN: 1573-3432
DOI
https://doi.org/10.1007/s10803-007-0478-x