What question did this study set out to answer?

To review the clinical characteristics, psychometric properties, and diagnostic performance of the Generalized Anxiety Disorder (GAD-7) screening questionnaire.

April 1, 2014Occupational Medicine

The GAD-7 questionnaire

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Why the study?

What are the psychometric properties and diagnostic accuracy of the GAD-7 questionnaire for anxiety disorders?

Population

Patients in primary care and general populations being screened for anxiety disorders

Comparison

Generalized Anxiety Disorder (GAD-7) questionnaire vs Penn State Worry Questionnaire for Measuring…

Design

Review

Authors

NWNefyn WilliamsBetsi Cadwaladr University Health Board

Discussion

Member takes

Implication

Supports GAD-7 screening in practice; extends validation data while leaving cardiac-specific confirmation open.

Key Points

To review the clinical characteristics, psychometric properties, and diagnostic performance of the Generalized Anxiety Disorder (GAD-7) screening questionnaire.
The GAD-7 is a seven-item self-report questionnaire assessing symptom frequency over the previous two weeks, generating scores ranging from 0 to 21.
Validation data across primary care and general populations were evaluated, comparing cut-off scores against clinical diagnostic standards and instruments such as the Penn State Worry Questionnaire.
A recommended cut-off score of 10 or greater yielded a sensitivity of 89% and a specificity of 82% for generalized anxiety disorder.
At the same threshold, the tool screened for panic disorder (74% sensitivity, 81% specificity), social anxiety disorder (72% sensitivity, 80% specificity), and post-traumatic stress disorder (66% sensitivity, 81% specificity).
The questionnaire demonstrated strong internal consistency (Cronbach's alpha 0.79–0.91) and showed greater sensitivity in detecting clinical change over time compared to the PSWQMR.

Structured PICO

What are the psychometric properties and diagnostic accuracy of the GAD-7 questionnaire for anxiety disorders?

Population

Patients in primary care and general populations being screened for anxiety disorders

Intervention

Generalized Anxiety Disorder (GAD-7) questionnaire

Comparator

Penn State Worry Questionnaire for Measuring Response (PSWQMR)

Outcome

Sensitivity and specificity for generalized anxiety disorderpatient reported

The GAD-7 is a valid, reliable, and highly sensitive self-report tool for screening and assessing the severity of generalized anxiety disorder in clinical and research settings.

Cite This Study

Nefyn Williams (2014) studied this question.

synapsesocial.com/papers/6a7ff7451eeae81ab93d2e77 https://doi.org/10.1093/occmed/kqt161

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The GAD-7 questionnaire

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

The GAD-7 questionnaire

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Also Consider