2007
DOI: 10.1111/j.1532-5415.2007.01103.x
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Validity of the Patient Health Questionnaire 2 (PHQ‐2) in Identifying Major Depression in Older People

Abstract: The PHQ-2 is a valid screening tool for major depression in older people but should be followed by a more-comprehensive diagnostic process. Although its specificity differs by age, sex, and racial and ethnic groups, these differences appear to be of little clinical significance.

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Cited by 290 publications
(184 citation statements)
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References 21 publications
(25 reference statements)
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“…The PHQ-9 is a nine-item questionnaire that asks respondents to indicate the frequency with which they experience each of the nine symptoms considered in the diagnostic criteria for major depression [28]. The PHQ-9 has been shown to be a valid and reliable measure of depressive symptoms in patients with a variety of medical conditions [11,14,19].…”
Section: Methodsmentioning
confidence: 99%
“…The PHQ-9 is a nine-item questionnaire that asks respondents to indicate the frequency with which they experience each of the nine symptoms considered in the diagnostic criteria for major depression [28]. The PHQ-9 has been shown to be a valid and reliable measure of depressive symptoms in patients with a variety of medical conditions [11,14,19].…”
Section: Methodsmentioning
confidence: 99%
“…We screened for exclusion criteria and invited those not excluded to complete a recorded partial waiver of consent and a stage I depression screen (2-item Patient Health Questionnaire). 28 Consenting patients with a positive screen were met at the clinic before their visit by a recruiter to obtain written consent and complete the 9-item Patient Health Questionnaire (PHQ-9). 29 Patients whose PHQ-9 score was Ն10, indicating probable major depression, were enrolled.…”
Section: Patient Enrollmentmentioning
confidence: 99%
“…Individuals with advanced cognitive and sensorial deficits or impaired locomotion were excluded. The sample size was calculated using the prevalence of depression, estimated at 20% in the elderly, as a reference 8 . A kappa coefficient of 0.6 with a 95% confidence interval was used to generate a conservative sample size of 180 individuals, estimated using the WinPepi application, version 2009 (http://www.brix tonhealth.com/pepi4windows.html).…”
Section: Study and Samplementioning
confidence: 99%