The PHQ-9 — used by doctors in over 80 countries to screen for depression
Answer honestly about the past two weeks
The PHQ-9 measures change over time. Retaking every 2–4 weeks tracks whether symptoms are improving, worsening, or stable.
The PHQ-9 (Patient Health Questionnaire, 9-item) was developed by Robert Kroenke, Kurt Spitzer, and Janet Williams and published in 2001. It directly assesses the nine criteria for major depressive disorder as defined in the DSM and is now the most widely used depression screening instrument in primary care worldwide, used across the UK, US, India, and over 80 countries.
Each item is scored 0–3, with a maximum score of 27. Cut-points: 1–4 minimal, 5–9 mild, 10–14 moderate, 15–19 moderately severe, 20–27 severe depression. A score of 10 or above has a sensitivity of 88% and specificity of 88% for major depressive disorder. The PHQ-9 also includes a functional impairment item assessing how much symptoms are affecting daily life.
Yukti Bodh · yuktilabs.in · Psychology · Self-Knowledge · Inner Science · This tool is for screening purposes only. If you are in crisis, please contact a helpline immediately.