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J Autism Dev Disord. 2018 Feb;48(2):341-350. doi: 10.1007/s10803-017-3336-5.

Diagnosing Autism in Adults with Intellectual Disability: Validation of the DiBAS-R in an Independent Sample.

Author information

1
Department of Education and Psychology, Clinical-Psychological Intervention, Freie Universität Berlin, Berlin, Germany.
2
Department of Psychiatry, Psychotherapy and Psychosomatics, Ev. Krankenhaus Königin Elisabeth Herzberge (KEH), Herzbergstr. 79, 10365, Berlin, Germany.
3
Department of Education and Psychology, Zentrum für Seelische Gesundheit, Freie Universität Berlin, Berlin, Germany.
4
Department of Psychiatry, Psychotherapy and Psychosomatics, Ev. Krankenhaus Königin Elisabeth Herzberge (KEH), Herzbergstr. 79, 10365, Berlin, Germany. tanja.sappok@t-online.de.

Abstract

The study assessed the diagnostic validity of the diagnostic behavioral assessment for autism spectrum disorders-revised (DiBAS-R; 19-item screening scale based on ratings by caregivers) in a clinical sample of 381 adults with ID. Analysis revealed a sensitivity of 0.82 and a specificity of 0.67 in the overall sample (70.3% agreement). Sensitivity (0.79) and specificity (0.84) were balanced in individuals with mild to moderate ID (83.3% agreement), while specificity was lower in individuals with severe to profound ID (sensitivity: 0.83, specificity: 0.34, 51% agreement). The level of ID as well as its interaction with ASD explained a significant proportion of the variance in the DiBAS-R scores. The DiBAS-R is an adequate screening tool, especially in individuals with mild to moderate ID.

KEYWORDS:

Autism spectrum disorder (ASD); DiBAS-R; Diagnostic behavioral assessment for autism spectrum disorders-revised; Intellectual disability; Screening

PMID:
28988347
DOI:
10.1007/s10803-017-3336-5
[Indexed for MEDLINE]

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