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Titolo:
A screening instrument for autism at 18 months of age: A 6-year follow-up study
Autore:
Baird, G; Charman, T; Baron-Cohen, S; Cox, A; Swettenham, J; Wheelwright, S; Drew, A;
Indirizzi:
Guys Hosp, Newcomen Ctr, London SE1 9RT, England Guys Hosp London England SE1 9RT , Newcomen Ctr, London SE1 9RT, England Univ Cambridge, Dept Expt Psychol, Cambridge CB2 3EB, England Univ Cambridge Cambridge England CB2 3EB hol, Cambridge CB2 3EB, England Univ Cambridge, Dept Psychiat, Cambridge CB2 3EB, England Univ Cambridge Cambridge England CB2 3EB iat, Cambridge CB2 3EB, England Univ Coll London, Dept Human Commun & Sci, London, England Univ Coll London London England ept Human Commun & Sci, London, England
Titolo Testata:
JOURNAL OF THE AMERICAN ACADEMY OF CHILD AND ADOLESCENT PSYCHIATRY
fascicolo: 6, volume: 39, anno: 2000,
pagine: 694 - 702
SICI:
0890-8567(200006)39:6<694:ASIFAA>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
PERVASIVE DEVELOPMENTAL DISORDERS; CHILDHOOD AUTISM; CHILDREN; CLASSIFICATION; EPIDEMIOLOGY; INDIVIDUALS;
Keywords:
autism; pervasive developmental disorder; Asperger's syndrome; screening;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Charman, T Univ Coll London, Behav Sci Unit, Inst Child Hlth, 30 Guilford St, London WC1N 1EH, England Univ Coll London 30 Guilford St London England WC1N 1EH ngland
Citazione:
G. Baird et al., "A screening instrument for autism at 18 months of age: A 6-year follow-up study", J AM A CHIL, 39(6), 2000, pp. 694-702

Abstract

Objectives: A population of 16,235 children aged 18 months was screened using the Checklist for Autism in Toddlers (CHAT) to identify childhood autism (CA). Two further screening procedures were conducted at age 3 and 5 years. The population was followed up at age 7 years in order to establish the sensitivity, specificity, and positive predictive value of the instrument. Method: A brief checklist assessing joint attention and pretend play behaviors was administered by primary health care practitioners when the childrenwere 18 months old. Follow-up methods included screening through parents and health practitioners and checking medical and educational records. Results: Nineteen cases of CA were successfully identified by the CHAT at 18 months. At follow-up a total of 50 cases of CA were identified via all surveillance methods. Thus, the CHAT has a sensitivity of 38% and a specificity of98% for identifying CA. The positive predictive value of the instrument was maximized by concentration on the highest-risk group. Repeated screening 1 month later increased the positive predictive value to 75% for identification of CA but reduced the sensitivity to 20%, although the specificity wasclose to 100%. The screen also identified cases of pervasive developmentaldisorder as well as children with language and other developmental disorders. Conclusions: The CHAT can be used to identify cases of autism and related pervasive developmental disorders at 18 months of age. It is emphasized that the CHAT is not a diagnostic instrument but can identify potential cases of autism spectrum disorders for a full diagnostic assessment.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 12:00:52