Kroenke2001 - The PHQ-9, validity of a brief depression severity measure
- Year read:#read2021
- Subject: Psychometrics Depression
- Bibtex: @kroenke2001
- Bibliography: Kroenke, K., Spitzer, R. L., & Williams, J. B. (2001). The PHQ-9: Validity of a brief depression severity measure. Journal of General Internal Medicine, 16(9), 606–613. https://doi.org/10.1046/j.1525-1497.2001.016009606.x
The Patient Health Questionnaire-9 (PHQ-9; [@kroenke2001]) is a self-rated questionnaire asks the patient to rate each of the 9 DSM-IV criteria for major depressive disorder on a scale from 0 “not at all” to 3 “nearly every day” during the last week, yielding a total score of 0 to 27.
A cut-off of ≥10 points distinguishes patients with major depressive disorder with a sensitivity of 88% and a specificity of 88%. The PHQ-9 has excellent internal validity (Cronbach’s = 0.89) [@kroenke2001].
… (recovery score 10 or lower)