PHQ-9 [Patient Health Questionnaire - 9 Item]

The PHQ-9 is a validated, 9-item self-administered scale measuring the degree of depressive symptoms (based on DSM-IV criteria) over the last two weeks. It also includes an (unscored) item to measure their impact. It is commonly used both for screening and monitoring purposes.

Created by Drs. Robert L. Spitzer, Janet B.W. Williams, Kurt Kroenke and colleagues, with an educational grant from Pfizer Inc. No permission required to reproduce, translate, display or distribute.


Over the last 2 weeks, how often have you been bothered by any of the following problems?

Not at all
Several days
More than half of days
Nearly every day
1. Little interest or pleasure in doing things.
2. Feeling down, depressed, or hopeless.
3. Trouble falling/staying asleep, sleeping too much.
4. Feeling tired or having little energy.
5. Poor appetite or overeating.
6. Feeling bad about yourself, or that you are a failure, or have let yourself or your family down.
7. Trouble concentrating on things, such as reading the newspaper or watching TV.
8. Moving or speaking so slowly that other people could have noticed. Or the opposite; being so fidgety or restless that you have been moving around more than usual.
9. Thoughts that you would be better off dead or of hurting yourself in some way.

If you checked off any problems in the 9 questions above, how difficult have these problems made it for you to do your work, take care of things at home, or get along with other people?


Self-report scales are for screening purposes only, and must be interpreted by a qualified health professional in conjunction with clinical assessment. They cannot be used alone for diagnostic or treatment purposes.