Depression self-check (PHQ-9)
Mood, sleep, energy and interest over the last two weeks. One of the most widely used depression screens.
About this scale
The nine PHQ-9 items match the nine diagnostic criteria for depression. It is used for screening and for tracking symptoms over time. It shows how much attention is warranted, but it is not a diagnosis.
SourceKroenke, 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. No permission required to reproduce or translate.
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