Validation of the 36‐item and 12‐item self‐report World Health Organization Disability Assessment Schedule II (WHODAS‐II) in individuals with autism spectrum disorder

The World Health Organization Disability Assessment Schedule II (WHODAS‐II) is one of the most widely used generic assessments for measuring disability levels in both clinical and nonclinical populations, with sound psychometrics that is also aligned with the International Classification of Function...

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Bibliographic Details
Published in:Autism research 2019-07, Vol.12 (7), p.1101-1111
Main Authors: Park, Shin Ho, Demetriou, Eleni A., Pepper, Karen L., Song, Yun Ju C., Thomas, Emma E., Hickie, Ian B., Glozier, Nick, Guastella, Adam J.
Format: Article
Language:English
Subjects:
Acceptable noise levels
Autism
autism spectrum disorder
Brain
disability
Health
Intellectual disabilities
internal consistency
Population studies
Properties (attributes)
Psychometrics
Quality of life
Quantitative psychology
Schedules
Self report
validity
WHODAS
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Summary:The World Health Organization Disability Assessment Schedule II (WHODAS‐II) is one of the most widely used generic assessments for measuring disability levels in both clinical and nonclinical populations, with sound psychometrics that is also aligned with the International Classification of Functioning framework. However, its psychometric properties have not been explored extensively in individuals with autism spectrum disorder (ASD). This study examined the psychometric properties of the 36‐item and 12‐item Self‐Report WHODAS‐II from 109 individuals diagnosed with ASD and without intellectual disability (IQ ≥ 70). Participants were consecutively recruited from the Brain and Mind Centre in New South Wales, Australia. The WHODAS‐II showed adequate internal consistency for all domain scores (α = 0.78–0.97 for 36‐item) and for the summary scale (α = 0.95 for 36‐item; 0.86 for 12‐item). All items also exhibited satisfactory correlations with their respective domain (r = 0.39–0.94 for 36‐item) and summary scores (r = 0.42–0.71 for 36‐item; 0.42–0.67 for 12‐item), except item 4.5 “sexual activity” from the 36‐item WHODAS‐II (r = 0.19). Concurrent validity was shown by moderate correlations between similar constructs across the WHODAS‐II and the World Health Organization Quality of Life BREF (Ps 
ISSN:1939-3792
1939-3806
DOI:10.1002/aur.2115