tailieunhanh - báo cáo hóa học: " Correspondence between EQ-5D health state classifications and EQ VAS scores"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí hóa học quốc tế đề tài : Correspondence between EQ-5D health state classifications and EQ VAS scores | Health and Quality of Life Outcomes BioMed Central Research Correspondence between EQ-5D health state classifications and EQ VAS scores David K Whynes for the TOMBOLA Group Open Access Address School of Economics University of Nottingham Nottingham NG7 2RD UK Email David KWhynes - Corresponding author Published 7 November 2008 Received 24 July 2008 Health and Quality of Life Outcomes 2008 6 94 doi 1477-7525-6-94 Accepted 7 November 2008 This article is available from http content 6 1 94 2008 Whynes and the TOMBOLA Group licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background The EQ-5D health-related quality of life instrument comprises a health state classification followed by a health evaluation using a visual analogue scale VAS . The EQ-5D has been employed frequently in economic evaluations yet the relationship between the two parts of the instrument remains ill-understood. In this paper we examine the correspondence between VAS scores and health state classifications for a large sample and identify variables which contribute to determining the VAS scores independently of the health states as classified. Methods A UK trial of management of low-grade abnormalities detected on screening for cervical pre-cancer TOMBOLA provided EQ-5D data for over 3 000 women. Information on distress and multi-dimensional health locus of control had been collected using other instruments. A linear regression model was fitted with VAS score as the dependent variable. Independent variables comprised EQ-5D health state classifications distress locus of control and socio-demographic characteristics. Equivalent EQ-5D and distress data collected at twelve months were available for .

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