Patient Health Questionnaire for Depression (PHQ-9)
A widely used nine-item screening questionnaire that measures how often you have experienced core depression symptoms over the last two weeks.
- Estimated time
- 3 min
- 9 questions
- 9
- Instrument version
- 1.0
- Time frame
- The last 2 weeks
About this assessment
A widely used nine-item screening questionnaire that measures how often you have experienced core depression symptoms over the last two weeks.
Developed by: Kroenke K, Spitzer RL, Williams JBW. The PHQ-9: validity of a brief depression severity measure. J Gen Intern Med. 2001;16(9):606-613.
Published in: https://www.phqscreeners.com
Source & development: The PHQ-9 is distributed by Pfizer at phqscreeners.com with the statement that the PHQ screens are free to use, reproduce, and distribute. No permission fee applies. Legal review for commercial web distribution is recorded in docs/LICENSES.md.
Who is this assessment about?
This screening runs in your browser. Anonymous results are not sent to our servers.
This assessment is an informational screening tool, not a medical diagnosis. Results are based on your responses and should not replace evaluation by a qualified healthcare professional.