The patient health questionnaire-9: validation among patients with glaucoma.

The patient health questionnaire-9: validation among patients with glaucoma.

BACKGROUND: Depression and anxiety are two common normal responses to a chronic disease such as glaucoma. This study analysed the measurement properties of the depression screening instrument - Patient Health Questionnaire-9 (PHQ-9) using Rasch analysis to determine if it can be used as a measure. M...

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Bibliographic Details
Main Authors: Vijaya K Gothwal, Deepak K Bagga, Seelam Bharani, Rebecca Sumalini, Shailaja P Reddy
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2014-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC4085058?pdf=render

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