Importance The Patient Health Questionnaire depression module (PHQ-9) is a 9-item self-
administered instrument used for detecting depression and assessing severity of …

Background Major depressive disorder (MDD) may be present in 10%–20% of patients in
medical settings. Routine depression screening is sometimes recommended to improve …

Background: Screening for major depression with the Patient Health Questionnaire-9 (PHQ-
9) can be done using a cutoff or the PHQ-9 diagnostic algorithm. Many primary studies …

Background: The brief Patient Health Questionnaire (PHQ-9) is commonly used to screen for
depression with 10 often recommended as the cut-off score. We summarized the …

Background There is interest in the use of very brief instruments to identify depression
because of the advantages they offer in busy clinical settings. The PHQ-2, consisting of two …

BackgroundThe Patient Health Questionnaire (PHQ) is the most commonly used measure to
screen for depression in primary care but there is still lack of clarity about its accuracy and …

Background The depression module of the Patient Health Questionnaire-9 (PHQ-9) is a
widely used depression screening instrument in nonpsychiatric settings. The PHQ-9 can be …

Objective To determine the accuracy of the Patient Health Questionnaire-9 (PHQ-9) for
screening to detect major depression. Design Individual participant data meta-analysis. Data …

PURPOSE Although screening for unipolar depression is controversial, it is potentially an
efficient way to find undetected cases and improve diagnostic acumen. Using a reference …

Objective To update a previous individual participant data meta-analysis and determine the
accuracy of the Patient Health Questionnaire-9 (PHQ-9), the most commonly used …