The diagnostic interview for psychoses (DIP): development, reliability and applications

Castle, D. J., Jablensky, A., McGrath, J. J., Carr, V., Morgan, V., Waterreus, A., Valuri, G., Stain, H., McGuffin, P. and Farmer, A. (2006) The diagnostic interview for psychoses (DIP): development, reliability and applications. Psychological Medicine, 36 1: 69-80. doi:10.1017/S0033291705005969

Author Castle, D. J.
Jablensky, A.
McGrath, J. J.
Carr, V.
Morgan, V.
Waterreus, A.
Valuri, G.
Stain, H.
McGuffin, P.
Farmer, A.
Title The diagnostic interview for psychoses (DIP): development, reliability and applications
Journal name Psychological Medicine   Check publisher's open access policy
ISSN 0033-2917
Publication date 2006-01-01
Year available 2006
Sub-type Article (original research)
DOI 10.1017/S0033291705005969
Open Access Status Not yet assessed
Volume 36
Issue 1
Start page 69
End page 80
Total pages 12
Editor E. Paykel
K. Kendler
Place of publication UK
Publisher Cambridge University Press
Language eng
Subject C1
321204 Mental Health
730211 Mental health
Abstract Background. We describe the development, reliability and applications of the Diagnostic Interview for Psychoses (DIP), a comprehensive interview schedule for psychotic disorders. Method. The DIP is intended for use by interviewers with a clinical background and was designed to occupy the middle ground between fully structured, lay-administered schedules, and semi-structured., psychiatrist-administered interviews. It encompasses four main domains: (a) demographic data; (b) social functioning and disability; (c) a diagnostic module comprising symptoms, signs and past history ratings; and (d) patterns of service utilization Lind patient-perceived need for services. It generates diagnoses according to several sets of criteria using the OPCRIT computerized diagnostic algorithm and can be administered either on-screen or in a hard-copy format. Results. The DIP proved easy to use and was well accepted in the field. For the diagnostic module, inter-rater reliability was assessed on 20 cases rated by 24 clinicians: good reliability was demonstrated for both ICD-10 and DSM-III-R diagnoses. Seven cases were interviewed 2-11 weeks apart to determine test-retest reliability, with pairwise agreement of 0.8-1.0 for most items. Diagnostic validity was assessed in 10 cases, interviewed with the DIP and using the SCAN as 'gold standard': in nine cases clinical diagnoses were in agreement. Conclusions. The DIP is suitable for use in large-scale epidemiological studies of psychotic disorders. as well as in smaller Studies where time is at a premium. While the diagnostic module stands on its own, the full DIP schedule, covering demography, social functioning and service utilization makes it a versatile multi-purpose tool.
Keyword Psychiatry
Psychology, Clinical
Australian National Survey
Q-Index Code C1
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2007 Higher Education Research Data Collection
School of Medicine Publications
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Citation counts: TR Web of Science Citation Count  Cited 180 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 193 times in Scopus Article | Citations
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Created: Wed, 15 Aug 2007, 19:19:42 EST