Patient Health Questionnaire-9

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Since unrecognized depression impact individuals’ overall health, the implementation of depression screening provides an avenue for patients with depression to seek the necessary treatments (Thombs et al, 2014). On the other hand, many patients who receive treatments for depression in primary care do not meet the diagnostic criteria (Institute for Clinical Systems, 2016). As the result, one must consider the validity and diagnostic accuracy of the screening instrument during the planning stage of the scholarly project. Health providers are able to use Patient Health Questionnaire-9 (PHQ-9) as a part of diagnostic criteria during initial diagnosis and periodically administer the PHQ-9 to assess the effectiveness of mental health interventions

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