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Examination of the screening properties of the personality diagnostic questionnaire 4+ (PDQ-4+) in a prison population

Davison, S., Leese, M. and Taylor, Pamela Jane 2001. Examination of the screening properties of the personality diagnostic questionnaire 4+ (PDQ-4+) in a prison population. Journal of Personality Disorders 15 (2) , pp. 180-194. 10.1521/pedi.15.2.180.19212

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Abstract

There is a high prevalence of personality disorder in most prison populations. Many pass through the system undiagnosed. A screening instrument would improve identification. This study examined the screening properties of the Personality Diagnostic Questionnaire-4+ (PDQ-4+) in prisoners convicted of violent and sexual offenses. A sample of British prisoners completed the self-report PDQ-4+ and were interviewed using the Structured Clinical Interview for DSM-IV Axis II disorders. When used to generate a total score, the PDQ-4+ had an acceptable overall accuracy as measured by the area under the Receiver Operating Characteristics (ROC) curve. The PDQ-4+ appears to have the properties suitable for use as a screening instrument, particularly when screening for the presence or absence of personality disorder rather than for individual personality disorder categories. A graph is presented from which choices of cut-off score for different combinations of sensitivity and specificity can be made. A cut off total score of 25 or above yielded near optimal sensitivity and specificity. The suggested cut off score for this population is lower than that previously suggested.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
MRC Centre for Neuropsychiatric Genetics and Genomics (CNGG)
Subjects: R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Publisher: The Guilford Press
ISSN: 0885-579X
Last Modified: 04 Jun 2017 08:36
URI: http://orca.cf.ac.uk/id/eprint/80851

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