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Development and validation of the Diagnostic Interview Adjustment Disorder (DIAD)
L R Cornelius1, S Brouwer, M R de Boer
1Research Center for Insurance Medicine, The Netherlands; Department of Health Sciences, Community and Occupational Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands; Social Security Institute, The Netherlands.
International Journal of Methods in Psychiatric Research
|January 31, 2014
Summary
Researchers developed the Diagnostic Interview Adjustment Disorder (DIAD) to address the lack of reliable tools for diagnosing adjustment disorders (ADs). The DIAD shows initial promise as a valid diagnostic instrument.
Area of Science:
- Psychiatry
- Psychological Assessment
Background:
- Adjustment disorders (ADs) are under-researched, partly due to the lack of validated diagnostic tools.
- Existing diagnostic criteria require operationalization for consistent application.
Purpose of the Study:
- To develop and validate the Diagnostic Interview Adjustment Disorder (DIAD), a structured interview for AD diagnosis.
- To assess the content and construct validity of the DIAD.
Main Methods:
- The DIAD was developed by adapting and operationalizing DSM-IV criteria for adjustment disorders.
- Content validity was assessed through expert consultation (n=11).
- Construct validity was evaluated by administering the DIAD to disability claimants (n=323) and correlating results with the K10 and WHODAS scales.
Main Results:
- Expert agreement on DIAD content was moderate to good.
- The DIAD identified a prevalence of 7.4% for adjustment disorders using revised criteria.
- Associations between DIAD-based AD classification and K10/WHODAS scores supported the DIAD's construct validity.
Conclusions:
- The DIAD demonstrates initial validity as a tool for diagnosing adjustment disorders.
- Further research is necessary to establish the DIAD's reliability and other validity aspects.
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