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

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.

The Ritvo Autism Asperger Diagnostic Scale-Revised (RAADS-R): a scale to assist the diagnosis of Autism Spectrum Disorder in adults: an international validation study.

The Ritvo Autism Asperger Diagnostic Scale-Revised (RAADS-R) is a valid and reliable instrument to assist the diagnosis of adults with Autism Spectrum Disorders (ASD). The 80-question scale was administered to 779 subjects (201 ASD and 578 comparisons). All ASD subjects met inclusion criteria: DSM-IV-TR, ADI/ADOS diagnoses and standardized IQ testing.

Twenty-year outcome for individuals with autism and average or near-average cognitive abilities.

Previous studies found substantial variability in adult outcome for people with autism whose cognitive functioning was within the near-average and average ranges. This study examined adult outcome for 41 such individuals (38 men and 3 women) originally identified through an epidemiological survey of autism in Utah. Mean age at the time of their previous cognitive assessment was 7.

A scale to assist the diagnosis of autism and Asperger's disorder in adults (RAADS): a pilot study.

An empirically based 78 question self-rating scale based on DSM-IV-TR and ICD-10 criteria was developed to assist clinicians' diagnosis of adults with autism and Asperger's Disorder-the Ritvo Autism and Asperger's Diagnostic Scale (RAADS). It was standardized on 17 autistic and 20 Asperger's Disorder and 57 comparison subjects. Both autistic and Asperger's groups scored significantly higher than comparison groups with no overlap; sensitivity, specificity, and content validity equaled one.

Elevated daytime melatonin concentrations in autism: A pilot study.

Concentrations of melatonin in overnight and first-voiding urine samples from 10 people with autism, 15 parents, 1 grandparent, 9 sibs without autism, and 10 healthy, unrelated volunteers, were measured by radioimmunoassay. Those with autism had significantly higher melatonin concentrations in the first voiding samples than controls. Groups did not differ in overnight melatonin concentrations.