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PHQ-9 Explained: The Nine-Item Patient Health Questionnaire

PK
Peter Kolomiets
|March 16, 2026|Updated Apr 13, 2026|6 min
PHQ-9 Explained: The Nine-Item Patient Health Questionnaire

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References

  1. Kroenke K, Spitzer RL, Williams JB (2001). The PHQ-9: Validity of a Brief Depression Severity Measure
  2. American Psychiatric Association (2013). Diagnostic and Statistical Manual of Mental Disorders (DSM-5)

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