Brief Report: Psychometric Properties of the Patient Health Questionaire-9 (PHQ-9) in Autistic Adults

Despite the high prevalence of depression and other mental illnesses in autistic adults, screening instruments such as the Patient Health Questionnaire (PHQ-9) have not been specifically validated in an autistic sample. Using data from two Autism CRC longitudinal studies ( n  = 581), confirmatory fa...

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Bibliographic Details
Published in:Journal of autism and developmental disorders 2020-06, Vol.50 (6), p.2217-2225
Main Authors: Arnold, Samuel R. C., Uljarević, Mirko, Hwang, Ye In, Richdale, Amanda L., Trollor, Julian N., Lawson, Lauren P.
Format: Article
Language:English
Subjects:
Autism
Autistic adults
Behavioral Science and Psychology
Brief Report
Child and School Psychology
Cognitive ability
Confirmatory factor analysis
Convergent validity
Diagnosis
Discriminant analysis
Factor analysis
Health status indicators
Illnesses
Medical screening
Mental depression
Mental disorders
Mental illness
Neurosciences
Pediatrics
Psychological well being
Psychology
Public Health
Quantitative psychology
Questionnaires
Surveys
Well being
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Summary:Despite the high prevalence of depression and other mental illnesses in autistic adults, screening instruments such as the Patient Health Questionnaire (PHQ-9) have not been specifically validated in an autistic sample. Using data from two Autism CRC longitudinal studies ( n  = 581), confirmatory factor analysis supported the two-factor model (somatic and cognitive/affective) in the autistic sample and one-factor model in the community comparison sample. Confirmatory bifactor analysis also supported use of the PHQ-9 total score in autism. Good convergent validity was found with two measures of psychological well-being for PHQ-9 total and subdomain scores. The PHQ-9 is a useful tool for autism research allowing comparison across autistic and non-autistic participants.
ISSN:0162-3257
1573-3432
DOI:10.1007/s10803-019-03947-9