title: The Swedish version of the Ritvo autism and asperger diagnostic scale: revised (RAADS-R). A validation study of a rating scale for adults.
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.
authors.affiliation: Department of Psychology, Stockholm University, Stockholm, Sweden.
authors.forename: Lisa M J
authors.initials: LM
authors.lastname: Andersen
authors.forename: Katharina
authors.initials: K
authors.lastname: Näswall
authors.forename: Irina
authors.initials: I
authors.lastname: Manouilenko
authors.forename: Lena
authors.initials: L
authors.lastname: Nylander
authors.forename: Johan
authors.initials: J
authors.lastname: Edgar
authors.forename: Riva Ariella
authors.initials: RA
authors.lastname: Ritvo
authors.forename: Edward
authors.initials: E
authors.lastname: Ritvo
authors.forename: Susanne
authors.initials: S
authors.lastname: Bejerot
mesh_terms: D000328:Adult; D000368:Aged; D020817:Asperger Syndrome / Q000175:diagnosis*; D001321:Autistic Disorder / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011569:Psychiatric Status Rating Scales; D011594:Psychometrics; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013548:Sweden