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Patient Health Questionnaire-9: A clinimetric analysis.

Fiammetta CosciKaj Sparle ChristensenSara CeccatelliChiara PatiernoDanilo Carrozzino
Published in: Revista brasileira de psiquiatria (Sao Paulo, Brazil : 1999) (2024)
The PHQ-9 is an instrument with potential clinical utility as an overall index of depression, mainly for screening purposes. Substantial revision, particularly in the wording of over- and under-discriminating items, is needed.
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