PHQ-9 Depression Screening Test
The clinically-standard 9-question PHQ-9 depression screener. Over the last 2 weeks — how often have you been bothered by each symptom?
9 questions
3 min
Instructions
Over the LAST 2 WEEKS, how often have you been bothered by any of the following problems?PHQ-9 is reproduced verbatim per the authors'/Pfizer free-use policy (use, copy, and distribute permitted without charge; attribution required). It is not modified.
Citations
- Kroenke, K., Spitzer, R. L., & Williams, J. B. W. (2001). The PHQ-9: Validity of a brief depression severity measure. Journal of General Internal Medicine, 16(9), 606-613. Validation
- Patient Health Questionnaire (PHQ-9) © Pfizer Inc. All rights reserved. Used under free-use terms; no formal permission required for clinical/research use with attribution. Official instrument