Preliminary reliability and validity of the generalized anxiety disorder questionnaire-IV: A revised self-report diagnostic measure of generalized anxiety disorder

Michelle G. Newman, Andrea R. Zuellig, Kevin E. Kachin, Michael J. Constantino, Amy Przeworski, Thane Erickson, Laurie Cashman-McGrath

Research output: Contribution to journalArticlepeer-review

312 Scopus citations

Abstract

This study examined the Generalized Anxiety Disorder Questionnaire-IV (GAD-Q-IV), a revised self-report diagnostic measure of generalized anxiety disorder (GAD) based on the fourth edition of the Diagnostic and Statistical Manual. GAD-Q-IV diagnoses were compared to structured interview diagnoses of individuals with GAD, social phobia, panic disorder, and nonanxious controls. Using Receiver Operating Characteristics analyses, the GAD-Q-IV showed 89% specificity and 83% sensitivity. The GAD-Q-IV also demonstrated test-retest reliability, convergent and discriminant validity, and kappa agreement of .67 with a structured interview. Students diagnosed with GAD by the GAD-Q-IV were not significantly different on two measures than a GAD community sample, but both groups had significantly higher scores than students identified as not meeting criteria for GAD, demonstrating clinical validity of the GAD-Q-IV.

Original languageEnglish (US)
Pages (from-to)215-233
Number of pages19
JournalBehavior Therapy
Volume33
Issue number2
DOIs
StatePublished - 2002

All Science Journal Classification (ASJC) codes

  • Clinical Psychology

Fingerprint Dive into the research topics of 'Preliminary reliability and validity of the generalized anxiety disorder questionnaire-IV: A revised self-report diagnostic measure of generalized anxiety disorder'. Together they form a unique fingerprint.

Cite this