Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/78713
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Type: Journal article
Title: Observed agreement problems between sub-scales and summary components of the SF-36 version 2: an alternative scoring method can correct the problem
Author: Tucker, G.
Adams, R.
Wilson, D.
Citation: PLoS One, 2013; 8(4):1-11
Publisher: Public Library of Science
Issue Date: 2013
ISSN: 1932-6203
1932-6203
Statement of
Responsibility: 
Graeme Tucker, Robert Adams, David Wilson
Abstract: Purpose: A number of previous studies have shown inconsistencies between sub-scale scores and component summary scores using traditional scoring methods of the SF-36 version 1. This study addresses the issue in Version 2 and asks if the previous problems of disagreement between the eight SF-36 Version 1 sub-scale scores and the Physical and Mental Component Summary persist in version 2. A second study objective is to review the recommended scoring methods for the creation of factor scoring weights and the effect on producing summary scale scores Methods: The 2004 South Australian Health Omnibus Survey dataset was used for the production of coefficients. There were 3,014 observations with full data for the SF-36. Data were analysed in LISREL V8.71. Confirmatory factor analysis models were fit to the data producing diagonally weighted least squares estimates. Scoring coefficients were validated on an independent dataset, the 2008 South Australian Health Omnibus Survey. Results: Problems of agreement were observed with the recommended orthogonal scoring methods which were corrected using confirmatory factor analysis. Conclusions: Confirmatory factor analysis is the preferred method to analyse SF-36 data, allowing for the correlation between physical and mental health.
Keywords: Humans; Health Status Indicators; Questionnaires; Mental Health; Age Distribution; Research Design; Adult; Aged; Middle Aged; Australia
Description: Extent: 11p.
Rights: © 2013 Tucker et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
RMID: 0020127839
DOI: 10.1371/journal.pone.0061191
Appears in Collections:Medicine publications

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