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Patient Health Questionnaire | Study Task

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There is a variety of rating scales for symptoms of depression, and the 9-item Person Health Questionnaire (PHQ-9) is one of them. The advantages of the PHQ-9 are: It is a methodologically good scale, It takes very little time to fill in, only 9 short questions, It can be used without paying a publisher/company, as is the case with the well known Beck depression inventory (BDI). Like the CUDOS, the PHQ-9 can be used to indicate the severity of depression.