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Clinical Calculator
Psychiatry V1.0
PHQ-9
Score
Patient Health Questionnaire — Depression Screening & Severity
Primary Reference
Kroenke K, et al.
J Gen Intern Med 2001; 16:606–613
Over the Last 2 Weeks
1. Little interest or pleasure in doing things
Not at all (0)
Several days (+1)
More than half the days (+2)
Nearly every day (+3)
2. Feeling down, depressed, or hopeless
Not at all (0)
Several days (+1)
More than half the days (+2)
Nearly every day (+3)
3. Trouble falling/staying asleep, or sleeping too much
Not at all (0)
Several days (+1)
More than half the days (+2)
Nearly every day (+3)
4. Feeling tired or having little energy
Not at all (0)
Several days (+1)
More than half the days (+2)
Nearly every day (+3)
5. Poor appetite or overeating
Not at all (0)
Several days (+1)
More than half the days (+2)
Nearly every day (+3)
6. Feeling bad about yourself
Not at all (0)
Several days (+1)
More than half the days (+2)
Nearly every day (+3)
7. Trouble concentrating
Not at all (0)
Several days (+1)
More than half the days (+2)
Nearly every day (+3)
8. Moving/speaking slowly or being fidgety/restless
Not at all (0)
Several days (+1)
More than half the days (+2)
Nearly every day (+3)
9. Thoughts of self-harm
Not at all (0)
Several days (+1)
More than half the days (+2)
Nearly every day (+3)
Calculate PHQ-9
Analysis Required
Enter patient parameters to calculate
depression screening.
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Depression Severity
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Severity
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Treatment Recommendation
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None/Mild 0–9
Moderate 10–14
Severe ≥15
Breakdown
Clinical Implication
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References & Original Research
↕ Hover to expand
1
Kroenke K, Spitzer RL, Williams JB.
The PHQ-9: validity of a brief depression severity measure.
J Gen Intern Med 2001;16:606–613.
View ↗
2
APA.
Practice Guidelines for the Treatment of MDD.
Am J Psychiatry 2010;167:1–152.
View ↗