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Title: Validity of the Thai EQ-5D in an occupational population in Thailand
Authors: Merel Kimman
Prin Vathesatogkit
Mark Woodward
E. Shyong Tai
Julian Thumboo
Sukit Yamwong
Wipa Ratanachaiwong
Hwee Lin Wee
Piyamitr Sritara
George Institute for Global Health
University of Sydney Faculty of Medicine
Mahidol University
National University Health System
Singapore General Hospital
Medical and Health Office
National University of Singapore
Keywords: Medicine
Issue Date: 1-Aug-2013
Citation: Quality of Life Research. Vol.22, No.6 (2013), 1499-1506
Abstract: Purpose: To assess the construct validity of the Thai EuroQoL (EQ-5D) among an occupational population in Thailand. Methods: Data were derived from a large cohort study among employees of the Electricity Generating Authority of Thailand. In 2008 and 2009, 4,850 participants completed the Thai EQ-5D and Short-Form 36 version 2 (SF-36v2). Thai preferences weights were used to convert EQ-5D health states into EQ-5D index scores. Construct validity of the Thai EQ-5D was examined by specifying and testing hypotheses about the relationships between the EQ-5D, SF-36v2, and participants' demographic and medical characteristics. Results: Construct validity of the Thai EQ-5D was supported by expected relationships with SF-36v2 scale and summary scores. For example, SF-36v2 scores on the mental health scale were much lower for participants who reported having problems on the EQ-5D anxiety/depression dimension compared to those reporting no problems (mean norm-based SF-36v2 scores: 52.9 vs. 41.8, p < 0.001). Additionally, reporting a problem in a given EQ-5D dimension was generally associated with lower SF-36v2 summary scores. The EQ-5D index score distinguished between groups of participants in the expected manner, on the basis of sex, age, education and self-reported health, thus providing evidence of known-groups validity. Conclusion: The study demonstrated good construct validity of the Thai EQ-5D in a large occupational population in Thailand. © 2012 Springer Science+Business Media B.V.
ISSN: 09629343
Appears in Collections:Scopus 2011-2015

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