MIDAS Project Publication Abstracts
Zimmerman, M., Mattia, J.I. The Psychiatric Diagnostic Screening
Questionnaire: Development, reliability and validity. Comprehensive
Psychiatry, 2005, 42, 175-189.
The Psychiatric Diagnostic Screening Questionnaire (PDSQ) is a
self-report scale designed to screen for the most common DSM-IV Axis I
disorders encountered in outpatient Mental Health settings. In the present
paper we report the results of 4 studies of the PDSQ involving more than
2,500 subjects receiving outpatient Mental Health care. In 2 studies we
examine the understandability of the items on the PDSQ. Items that
initially were less well understood were rewritten, and all items of the
final version of the scale were understood by more than 90% of the
respondents. In the other 2 studies the reliability and validity of the
PDSQ subscales was examined. A priori criteria were established to
guide the revision of subscales. The final version of the questionnaire
contains 13 subscales (major depression, bulimia, posttraumatic stress
disorder, panic disorder, agoraphobia, social phobia, generalized anxiety
disorder, obsessive-compulsive disorder, alcohol abuse/dependence, drug
abuse/dependence, somatization, hypochondriasis, and psychosis), each of
which achieved good-excellent levels of internal consistency, test-retest
reliability, discriminant, convergent and concurrent validity.
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