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J Autism Dev Disord. 2011 Dec;41(12):1635-45. doi: 10.1007/s10803-011-1191-3.

The Swedish version of the Ritvo autism and asperger diagnostic scale: revised (RAADS-R). A validation study of a rating scale for adults.

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1
Department of Psychology, Stockholm University, Stockholm, Sweden.

Abstract

There is a paucity of diagnostic instruments for adults with autism spectrum disorder (ASD). This study evaluates the psychometric properties of the Swedish version of the Ritvo Autism and Asperger Diagnostic Scale-Revised (RAADS-R), an 80-item self-rating scale designed to assist clinicians diagnosing ASD in adults. It was administered to 75 adults with ASD and 197 comparison cases. Also, a subset completed the Autism Spectrum Quotient (AQ). Three out of four subscales had high internal consistency. Sensitivity was 91% and specificity was 93%. The ASD subjects had significantly higher mean scores on all subscales. ASD females had higher scores than ASD males on the sensory motor subscale, a dimension not included in the AQ. RAADS-R showed promising test re-test reliability.

PMID:
21327833
PMCID:
PMC3217140
DOI:
10.1007/s10803-011-1191-3
[Indexed for MEDLINE]
Free PMC Article
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