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PHQ 9 Depression Score Calculator

  • PHQ 9 Depression Score Calculator
  • Little interest or pleasure in doing things
  • Feeling down or hopeless
  • Trouble falling asleep staying asleep or sleeping too much
  • Feeling tired or having little energy
  • Poor appetite or overeating
  • Feeling bad about yourself or feeling like a failure
  • Trouble concentrating on tasks
  • Moving or speaking slowly or the opposite such as restlessness
  • Thoughts that you would be better off dead or thoughts of self harm
  • PHQ 9 Depression Score Explanation and Clinical Context
    PHQ 9 is a validated questionnaire used worldwide to screen the presence and severity of depressive symptoms. It evaluates nine core symptoms that reflect the diagnostic criteria of major depressive disorder. Each item is scored from zero to three and the total score ranges from zero to twenty seven. Scores correlate with the severity of depression and guide clinicians toward appropriate management decisions. Minimal to mild scores often indicate the need for monitoring while moderate to severe scores may require structured therapy evaluation and potential initiation of pharmacologic treatment. PHQ 9 is also practical for tracking treatment response over time due to its sensitivity to clinical change.

    Reference
    Kroenke K Spitzer RL Williams JB. The PHQ 9 validity of a brief depression severity measure. Journal of General Internal Medicine. 2001. 16. 606 to 613.

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