Development of a short version of the visual function questionnaire using item-response theory.

Development of a short version of the visual function questionnaire using item-response theory.

PURPOSE: In clinical ophthalmology as in other fields, measuring patient-reported outcomes imposes a burden on patients. To decrease that burden, we used item-response theory (IRT) to develop and test a short version of the National Eye Institute's Visual Function Questionnaire (VFQ). METHODS:...

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Bibliographic Details
Main Authors: Shunichi Fukuhara, Takafumi Wakita, Masakazu Yamada, Yoshimune Hiratsuka, Joseph Green, Kotaro Oki
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2013-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC3771973?pdf=render

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