A brief, freely available DSM-aligned measure of generalised anxiety severity. Validated across clinical and population samples. Also sensitive for panic disorder, social anxiety, and PTSD at higher cut-off scores.
4-point frequency (0=not at all to 3=nearly every day); total 0–21
Freely available. Cut-offs: >=5 mild, >=10 moderate, >=15 severe. Routinely paired with PHQ-9 as a standard battery. Used in IAPT (UK) and similar services worldwide.
Spitzer, R.L., Kroenke, K., Williams, J.B.W., & Löwe, B. (2006). A brief measure for assessing generalized anxiety disorder. Archives of Internal Medicine, 166(10), 1092–1097.
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