Patient Health Questionnaire 2 (PHQ-2)

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The Patient Health Questionnaire 2 (PHQ-2) is used by some clinicians and organizations to screen patients for undiagnosed depression. The PHQ-2 consists of the first two questions asked on the PHQ-9. If the patient responds affirmatively to either of the two items on the PHQ-2, the following seven questions on the PHQ-9 are asked. This can be a particularly effective way to screen large groups of people for depression.*

* Li, MM, Friedman, B, Conwell, Y, Fiscella, K. Validity of the Patient Health Questionnaire 2 (PHQ-2) in Identifying Major Depression in Older People. Journal of the American Geriatric Society. 2007; 55:596-602