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Br J Psychiatry. 1999 Nov;175:444-51.

Autism screening questionnaire: diagnostic validity.

Author information

  • 1MRC Child Psychiatry Unit, Institute of Psychiatry, London.

Abstract

BACKGROUND:

Good interview and diagnostic measures for autism and other pervasive developmental disorders (PDDs) are available but there is a lack of a good screening questionnaire.

AIMS:

To develop and test a screening questionnaire based on items in the best available diagnostic interview--the Autism Diagnostic Interview--Revised (ADI-R).

METHOD:

A 40-item scale, the Autism Screening Questionnaire (ASQ), was developed and tested on a sample of 160 individuals with PDD and 40 with non-PDD diagnoses.

RESULTS:

The ASQ has good discriminative validity with respect to the separation of PDD from non-PDD diagnoses at all IQ levels, with a cut-off of 15 proving most effective. The differentiation between autism and other varieties of PDD was weaker.

CONCLUSIONS:

The ASQ is an effective screening questionnaire for PDD.

PMID:
10789276
[PubMed - indexed for MEDLINE]
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