PHQ-9 Depression Self-Test: Overview and Interpretation
The Patient Health Questionnaire-9 (PHQ-9) is a widely used 9-item self-assessment tool for screening and measuring the severity of depression. It is based on the DSM-5 criteria for major depressive disorder (MDD) and is commonly used in clinical and research settings.
Key Features of the PHQ-9
- 9 questions rated on a 4-point scale (0–3):
- 0 = Not at all
- 1 = Several days
- 2 = More than half the days
- 3 = Nearly every day
- Assesses symptoms over the past 2 weeks.
- Quick & reliable: Takes <5 minutes, validated in multiple studies.
Scoring & Interpretation
- Total Score Range: 0–27
- 0–4 = Minimal or no depression
- 5–9 = Mild depression
- 10–14 = Moderate depression
- 15–19 = Moderately severe depression
- 20–27 = Severe depression
A score ≥10 suggests clinical depression and warrants professional evaluation.
Why Use the PHQ-9?
- Clinically validated: Used by doctors and therapists worldwide.
- Tracks depression severity: Helps monitor treatment progress.
- Identifies suicide risk: Question 9 flags urgent concerns.
Limitations
- Self-report bias: Depends on honest responses.
- Not a diagnosis: Only a screening tool—requires clinical follow-up.
- Doesn’t assess causes: Doesn’t differentiate between biological, situational, or trauma-related depression.
(Optional) Play this relaxing music while taking the test to help you stay calm and focused.