Understanding the PHQ-9 Depression Questionnaire
What the nine questions measure and what the score means.
What it is
The PHQ-9 asks how often in the last two weeks you were bothered by nine symptoms of depression. Each is scored from 0 to 3.
Interpreting scores
Scores of 5, 10, 15 and 20 mark mild, moderate, moderately severe and severe symptoms. A score of 10 or more is a common threshold for further assessment.
What to do next
It is a screening tool, not a diagnosis. If you score high or have thoughts of self-harm, contact a clinician or crisis line. In the US, call or text 988.
Try it: PHQ-9 Depression Screening
Example with sample values. Open the full calculator →
This screening tool is not a diagnosis. Scores of 10 or more warrant a conversation with a health professional.
Educational content only. This article does not replace advice from a qualified health professional. Medical disclaimer.