(PDSQ™) Psychiatric Diagnostic Screening Questionnaire™

By Mark Zimmerman, MD

(PDSQ™) Psychiatric Diagnostic Screening Questionnaire™

Benefits

Allows primary care providers to routinely consider comorbidity without additional demands on their time

Ages

18 years and up

Admin Time

15-20 minutes

Format

Self-report, yes-or-no items

Scores

Cutoff scores, critical items, and follow-up interview guides are provided for each of 13 disorders

Publish Date

2002

Translation

Available in Romanian

Published Translations
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Kits

PDSQ Kit

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Product #: W-385

PDSQ Kit

Includes 25 Test Booklets; 25 Summary Sheets; Manual; CD containing 13 Follow-Up Interview Guides (1 for each of 13 disorders), which can be downloaded for repeated use.

$143.50

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Forms

PDSQ Test Booklet (Pack of 25)

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Product #: W-385A

PDSQ Test Booklet (Pack of 25)

$52.50

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PDSQ Summary Sheet (Pad of 100)

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Product #: W-385B

PDSQ Summary Sheet (Pad of 100)

Required in order to determine critical items endorsed and need for follow-up.

$35.50

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Manuals & Resources

PDSQ Manual

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Product #: W-385C

PDSQ Manual

$65.50

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(PDSQ™) Psychiatric Diagnostic Screening Questionnaire™

(PDSQ™) Psychiatric Diagnostic Screening Questionnaire™

BY MARK ZIMMERMAN, MD

This brief self-report instrument screens for the DSM-IV Axis I disorders most commonly encountered among individuals 18 years of age and older, in medical and outpatient mental health settings. Validated against diagnostic criteria and interview-derived diagnoses, the PDSQ, over the course of 10 years and more than 3,000 administrations, has proven effective, convenient, and reliable. It allows primary-care providers to routinely consider co-morbidity without significant additional demands on their time.

Cutoff Scores and Follow-Up Guides for 13 Axis I Disorders

Administered and scored in the clinician’s office prior to the initial diagnostic interview, the PDSQ requires just 15 to 20 minutes to complete. Its 125 yes-or-no items can be quickly hand scored to obtain a Total Score (which functions as a global indicator of psychopathology) plus scale scores for 13 disorders:

  • Major Depressive Disorder
  • Generalized Anxiety Disorder
  • Panic Disorder
  • Posttraumatic Stress Disorder
  • Alcohol Abuse/Dependence
  • Drug Abuse/Dependence
  • Psychosis
  • Bulimia/Binge-Eating Disorder
  • Somatization Disorder
  • Obsessive–Compulsive Disorder
  • Social Phobia
  • Hypochondriasis
  • Agoraphobia

Six items on the Depression scale provide a measure of suicidal ideation.

Cutoff scores, critical items, and follow-up interview guides are provided for each disorder. If the patient scores above the cutoff for one or more disorders, the clinician can use the appropriate follow-up interview guide to gain more specific clinical information and to record relevant details. (These guides are provided on CD and can be printed out as needed.) 

A Reliable Yet Quick Diagnostic Screen

The PDSQ has excellent sensitivity and a correspondingly high negative predictive value. Therefore, when the test indicates that a disorder is not present, clinicians can be confident, as long as there is no contradictory information from other sources, that they do not need to inquire further about symptoms for that disorder. Based on cutoffs resulting in a sensitivity of 90%, the mean negative predictive value of the PDSQ subscales is 97%.

If clinicians review PDSQ results before seeing patients, they are less likely to overlook areas of psychopathology, especially when patients suffer from more than one disorder. The PDSQ can improve the efficiency of diagnostic evaluation by quickly guiding clinicians toward symptom areas that should be examined in follow-up assessment.

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