Patient Health Questionnaire (PHQ-9)

The Patient Health Questionnaire (PHQ) is a self-report measure designed to screen depressive symptoms. It takes one to five minutes to complete and roughly the same amount of time for a clinician to review the responses. The PHQ-9 is available in multiple languages.

Spitzer, R.L., Kroenke, K., Williams, J.B.W., & Patient Health Questionnaire Primary Care Study Group. (1999). Validation and utility of a self-report version of PRIME-MD: The PHQ primary care study. JAMA: Journal of the American Medical Association, 282(18), 1737-1744. http://dx.doi.org/10.1001/jama.282.18.1737

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. http://dx.doi.org/10.1046/j.1525-1497.2001.016009606.x

Martin, A., Rief, W., Klaiberg, A., & Braehler, E. (2006). Validity of the brief patient health questionnaire mood scale (PHQ-9) in the general population. General Hospital Psychiatry, 28(1), 71-77. https://doi.org/10.1016/j.genhosppsych.2005.07.003

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