Patient Health Questionnaire (PHQ-9)

• 2001

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• Kurt Kroenke; Robert Spitzer; Janet Williams

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About

This questionnaire is a tool used to assess depression. Patients answer questions about their feelings over the past two weeks, scoring each response from 0 to 3. The total score helps determine depression severity: minimal, mild, moderate, moderately severe, or severe. For diagnosis of Major Depressive Disorder or Other Depressive Disorder, specific criteria must be met. The questionnaire can also track changes in symptoms over time and guide treatment plans. Healthcare professionals use it alongside clinical judgment for accurate diagnosis and care planning.

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Tags

Focus Areas: Everyday Emergency; Mental Health

Keywords: Depression; Depressive Disorder; Mental Health; Psychological Tests; Psychometrics; Self-Assessment; Severity of Illness Index; Surveys and Questionnaires

Emergency Management Stages: Response; Preparedness (Prevention / Protection)

Audiences: Behavioral Health Professionals; Physicians

Format: Job Aid

Media Type: Document

Institutions: American Psychological Association; Indiana University; New York State Psychiatric Institute

Institution Types: Professional Association; Academic; Healthcare

Language: English

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The information provided on this website is for educational purposes only. It does not substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

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