Trends in Autism Prevalence: Diagnostic Substitution Revisited / Helen COO in Journal of Autism and Developmental Disorders, 38-6 (July 2008)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 38-6 (July 2008) . - p.1036-1046 Titre : Trends in Autism Prevalence: Diagnostic Substitution Revisited Type de document : Texte imprimé et/ou numérique Auteurs : Helen COO, Auteur ; Hélène OUELLETTE-KUNTZ, Auteur ; Jennifer E. V. LLOYD, Auteur ; Liza KASMARA, Auteur ; Jeanette J. A. HOLDEN, Auteur ; M. E. Suzanne LEWIS, Auteur Année de publication : 2008 Article en page(s) : p.1036-1046 Langues : Anglais (eng) Mots-clés : Autism Autistic-disorder Diagnostic-substitution Prevalence Edudata-Canada British-Columbia-Ministry-of-Education Index. décimale : PER Périodiques Résumé : 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. En ligne : http://dx.doi.org/10.1007/s10803-007-0478-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=473 [article] Trends in Autism Prevalence: Diagnostic Substitution Revisited [Texte imprimé et/ou numérique] / Helen COO, Auteur ; Hélène OUELLETTE-KUNTZ, Auteur ; Jennifer E. V. LLOYD, Auteur ; Liza KASMARA, Auteur ; Jeanette J. A. HOLDEN, Auteur ; M. E. Suzanne LEWIS, Auteur . - 2008 . - p.1036-1046. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 38-6 (July 2008) . - p.1036-1046 Mots-clés : Autism Autistic-disorder Diagnostic-substitution Prevalence Edudata-Canada British-Columbia-Ministry-of-Education Index. décimale : PER Périodiques Résumé : 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. En ligne : http://dx.doi.org/10.1007/s10803-007-0478-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=473

Trends in Special Education Code Assignment for Autism: Implications for Prevalence Estimates / Hélène OUELLETTE-KUNTZ in Journal of Autism and Developmental Disorders, 37-10 (November 2007)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 37-10 (November 2007) . - p.1941-1948 Titre : Trends in Special Education Code Assignment for Autism: Implications for Prevalence Estimates Type de document : Texte imprimé et/ou numérique Auteurs : Hélène OUELLETTE-KUNTZ, Auteur ; Helen COO, Auteur ; Jennifer E. V. LLOYD, Auteur ; Liza KASMARA, Auteur ; Jeanette J. A. HOLDEN, Auteur ; M. E. Suzanne LEWIS, Auteur Année de publication : 2007 Article en page(s) : p.1941-1948 Langues : Anglais (eng) Mots-clés : Autism autistic-disorder prevalence trends special-education Edudata-Canada British-Columbia-Ministry-of-Education Index. décimale : PER Périodiques Résumé : There is considerable controversy over reasons for observed increases in the prevalence of autism spectrum disorders. We examined trends in British Columbia education database coding of children with autism from 1996 to 2004. There was a significant linear increase in autism prevalence. The proportion of children identified by age 6 increased significantly from 1996 to 1999. When we calculated prevalence assuming onset prior to age 3, previously unidentified cases, particularly among girls in 1996 and 1997, accounted for substantial increases in estimated prevalence. The magnitude of under-identification decreased from 1996 to 2000, and rose slightly in 2001. Analyses of prevalence trends must take into account effects of earlier age at identification and inclusion of previously undetected cases on prevalence estimates. En ligne : http://dx.doi.org/10.1007/s10803-006-0326-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=219 [article] Trends in Special Education Code Assignment for Autism: Implications for Prevalence Estimates [Texte imprimé et/ou numérique] / Hélène OUELLETTE-KUNTZ, Auteur ; Helen COO, Auteur ; Jennifer E. V. LLOYD, Auteur ; Liza KASMARA, Auteur ; Jeanette J. A. HOLDEN, Auteur ; M. E. Suzanne LEWIS, Auteur . - 2007 . - p.1941-1948. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 37-10 (November 2007) . - p.1941-1948 Mots-clés : Autism autistic-disorder prevalence trends special-education Edudata-Canada British-Columbia-Ministry-of-Education Index. décimale : PER Périodiques Résumé : There is considerable controversy over reasons for observed increases in the prevalence of autism spectrum disorders. We examined trends in British Columbia education database coding of children with autism from 1996 to 2004. There was a significant linear increase in autism prevalence. The proportion of children identified by age 6 increased significantly from 1996 to 1999. When we calculated prevalence assuming onset prior to age 3, previously unidentified cases, particularly among girls in 1996 and 1997, accounted for substantial increases in estimated prevalence. The magnitude of under-identification decreased from 1996 to 2000, and rose slightly in 2001. Analyses of prevalence trends must take into account effects of earlier age at identification and inclusion of previously undetected cases on prevalence estimates. En ligne : http://dx.doi.org/10.1007/s10803-006-0326-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=219

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