What GAD-7 measures
GAD-7 is an adult self-report screening questionnaire developed by Spitzer, Kroenke, Williams and Löwe in 2006. It covers worry, tension, restlessness, irritability and apprehension.
How scoring works
Add seven answers scored 0–3. Total: 0–21. Conventional symptom ranges are 0–4 minimal, 5–9 mild, 10–14 moderate and 15–21 severe. There are no reverse-scored items.