Calculator: Depression screening by a nine-item Patient Health Questionnaire (PHQ-9) in adults

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

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1. Little interest or pleasure in doing things


2. Feeling down, depressed, or hopeless


3. Trouble falling or staying asleep, or 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 television


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 a lot more than usual


9. Thoughts that you would be better off dead or of hurting yourself in some way


PHQ-9 score interpretation

0 to 4 points: No depression
5 to 9 points: Mild depression
10 to 14 points: Moderate depression
15 to 19 points: Moderately severe depression
20 to 27 points: Severe depression


  • PHQ-9 is adapted from PRIME MD TODAY, developed by Drs. Robert L Spitzer, Janet BW Williams, Kurt Kroenke, and colleagues, with an educational grant from Pfizer Inc.


  • Kroenke K, Spitzer RL. The PHQ-9: A new depression and diagnostic severity measure. Psychiatric Annals 2002; 32:509.
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