Process / pipelineDepression screening

PHQ-9 Depression Screening

The Patient Health Questionnaire-9 (PHQ-9) is a brief, 9-item self-report instrument for screening and measuring the severity of depressive symptoms in primary care and mental health settings. Developed by Kurt Kroenke and colleagues in 2001, the PHQ-9 is now widely used in healthcare systems worldwide as a rapid, accurate screening and monitoring tool.

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Sources

  1. Kroenke, K., Spitzer, R. L., & Williams, J. B. W. (2001). The PHQ-9: Validity of a brief depression severity measure. Journal of General Internal Medicine, 16(9), 606–613. DOI: 10.1046/j.1525-1497.2001.016009606.x
  2. Kroenke, K., Strine, T. W., Spitzer, R. L., Williams, J. B. W., Berry, J. T., & Mokdad, A. H. (2009). The PHQ-8 as a measure of current depression in the general population. Journal of Affective Disorders, 114(1–3), 163–173. DOI: 10.1016/j.jad.2008.06.026

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Referenced by

ScholarGatePHQ-9 Depression Screening (Patient Health Questionnaire-9). Retrieved 2026-06-04 from https://scholargate.app/en/clinical-psychology/phq-9-screening