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Diagnosis
The 2-item Generalized Anxiety Disorder scale had high sensitivity and specificity for detecting GAD in primary care
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https://doi.org/10.1136/ebm.12.5.149

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    Kroenke K, Spitzer RL, Williams JB, et al. Anxiety disorders in primary care: prevalence, impairment, comorbidity, and detection. Ann Intern Med 2007;146:317–25.
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 Q In primary care patients, is a brief anxiety measure (Generalized Anxiety Disorder [GAD] scale) accurate for detecting GAD, panic disorder, social anxiety disorder, or post-traumatic stress disorder?

    Clinical impact ratings GP/FP/Primary care ★★★★★☆☆ GP/FP/Mental health ★★★★★★☆ Psychiatry ★★★★★☆☆

    METHODS

    Embedded ImageDesign:

    blinded comparison of GAD scale with psychiatric diagnoses based on DSM-IV criteria.

    Embedded ImageSetting:

    15 primary care centres (13 family practice and 2 internal medicine) in 12 states in the US.

    Embedded ImagePatients:

    965 patients who were 18–87 years of age (mean age 47 y, 69% women), completed a self-report questionnaire, and were randomly selected from 1654 patients who agreed to a follow-up telephone interview.

    Embedded ImageDescription of test:

    GAD-7, a 7-item anxiety scale. Scores ranged from 0 to 21; scores of 5, 10, and 15 indicated mild, moderate, and severe anxiety symptoms, respectively. The …

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    Footnotes

    • For correspondence: Dr K Kroenke, Regenstrief Institute, Indianapolis, IN, USA. kkroenke{at}regenstrief.org

    • Source of funding: Pfizer Inc.