Lecture Notes: PHQ-9 Depression Questionnaires

Over the last two weeks, how often have you been bothered by any of the following problems? Not at all Several days More than half the days Nearly every day
Little interest or pleasure in doing things 0 123
Feeling down, depressed, or hopeless 0 123
Trouble falling or staying asleep, or sleeping too much 0 123
Feeling tired or having little energy 0 123
Poor appetite or overeating 0 123
Feeling bad about yourself, or that you are a failure, or have let yourself or your family down 0 123
Trouble concentrating on things, such as reading the newspaper or watching television 0 123
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 0 123
Thoughts that you would be better off dead or of hurting yourself in some way 0 123
If you checked off any problems, 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? Not difficult at all Somewhat difficultVery difficultExtremely difficult

  • PHQ-9 Score ≥10: Likely major depression.
  • Depression score ranges:
    • 5 to 9: mild
    • 10 to 14: moderate
    • 15 to 19: moderately severe
    • ≥20: severe
PHQ-9 is adapted from PRIME MD TODAY, developed by Drs Robert L. Spitzer, Janet B.W. Williams, Kurt Kroenke, and collegues, with an educational grant from Pfizer Inc.

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