PHQ-9 (Patient Health Questionnaire-9)
Availability varies by external site.
Key Details
- Primary Focus
- Nine self-report items covering anhedonia, low mood, sleep, energy, appetite, and concentration
- Appropriate For
- Adults in clinical care with suspected or treated depression. Not for unguided self-diagnosis.
- Session Use
- Administer early and during treatment to document response to care
Overview
Includes score bands from minimal to severe. Recommend review item 9 for suicide risk.
How clinicians use it
A clinician calculator for the PHQ-9, a 9-item self-report measure that rates depressive symptom severity over the past two weeks. Scores map to minimal through severe ranges and support screening plus treatment monitoring. Item 9 screens for suicidal ideation and requires immediate clinical follow-up when endorsed. Final diagnosis still requires clinical interview. Not a patient self-help tool or stand-alone diagnostic instrument.
Details
- Source
- MDCalc