Professional
Technical
In the Industry Vocabulary Test
PHQ-9
Also written as: PHQ-9 — Patient Health Questionnaire-9
Patient Health Questionnaire-9, a standardized screening tool for depression severity.
Full Definition
The PHQ-9 is a nine-item depression screening instrument that scores each DSM-IV depression criterion from 0-3. Total scores range from 0-27, with higher scores indicating more severe depression. Widely used in primary care and mental health settings for initial screening and monitoring treatment response. Editors should note the hyphenated format and that it's typically referenced with specific score ranges or total scores.
Usage
Usage note: Always hyphenated; typically followed by score or score range.
In Context
- "Initial PHQ-9 score of 18 indicated moderately severe depression." — Intake assessment
- "Patient's PHQ-9 scores decreased from 22 to 8 over the treatment period." — Outcome measurement report
Also known as
Patient Health Questionnaire-9
Don't confuse with
PHQ-2
GAD-7
Beck Depression Inventory