ToolsCalculators
PHQ-9 (Patient Health Questionnaire-9)
Nine-item self-report measure of depressive symptom severity over the past 2 weeks.
PHQ-9 (Patient Health Questionnaire-9)
Little interest or pleasure in doing things
Feeling down, depressed, or hopeless
Trouble falling/staying asleep, or sleeping too much
Feeling tired or having little energy
Poor appetite or overeating
Feeling bad about yourself, or that you are a failure
Trouble concentrating on things
Moving/speaking slowly, or being fidgety/restless
Thoughts that you would be better off dead, or of hurting yourself
Result0 / 27
Minimal depression
When to use
- Screening for and grading the severity of depression, and monitoring treatment response over time.
Formula
Sum of 9 items, each rated 0-3. Range 0-27. Bands: 0-4 minimal, 5-9 mild, 10-14 moderate, 15-19 moderately severe, 20-27 severe.
Pearls and pitfalls
- Any positive response (>0) on the suicidality item warrants direct clinical follow-up regardless of total score.