✦ LIBER ✦

Reliability and validity of the PHQ-9 for screening late-life depression in Chinese primary care

✍ Scribed by Shulin Chen; Helen Chiu; Baihua Xu; Yan Ma; Tao Jin; Manhua Wu; Yeates Conwell

Publisher: John Wiley and Sons
Year: 2009
Tongue: English
Weight: 140 KB
Volume: 25
Category: Article
ISSN: 0885-6230
DOI: 10.1002/gps.2442

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Objective

The aim of this study was to examine the reliability and validation of the 9‐item Patient Health Questionnaire (PHQ‐9) for late‐life depression in Chinese primary care.

Methods

In the primary care clinics (PCCs) of Hangzhou city, we recruited 364 older patients (aged ≥ 60) for the PHQ‐9 screening. Then 77 of them were further interviewed with Structured Clinical Interview for DSM Disorders (SCID) for the diagnosis of major depression in late life. Statistic strategies for the feasibility, reliability, validity, and receiver operating characteristic curve were performed.

Results

The mean administration time was 7.5 min, and the Cronbach's α was 0.91. The optimal cut‐off score of PHQ‐9 ≥ 9 revealed a sensitivity of 0.86, specificity of 0.77, and positive likelihood ratio of 5.73. The area under the curve (AUC) in this study was 0.92 (SD = 0.02, 95% CI 0.88–0.96). The PHQ‐2 also revealed good sensitivity (0.84) and specificity (0.90) at the cut‐off point≥ 3.

Conclusions

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