Journal article
Using Rasch analysis to evaluate the validity of the diabetes-specific version of the Illness Perception Questionnaire-Revised
G Rees, EL Lamoureux, J Xie, BA Sturrock, EK Fenwick
Journal of Health Psychology | SAGE PUBLICATIONS LTD | Published : 2015
Abstract
This study used Rasch analysis to examine the psychometric validity of the Illness Perception Questionnaire-Revised to assess beliefs about diabetes in 470 participants with Type 2 diabetes and 71 participants with Type 1 diabetes. All Illness Perception Questionnaire-Revised scales had psychometric issues, which included poorly utilised response categories, poor scale precision and multidimensionality. Following re-engineering, only four of the eight scales (Consequences, Illness coherence, Timeline cyclical and Emotional representations) were psychometrically adequate according to the Rasch model. The diabetes-specific version of the Illness Perception Questionnaire-Revised provides subopt..
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Awarded by Australian Research Council
Funding Acknowledgements
This project was funded by an Australian Research Council Linkage grant (LP0884108), with Diabetes Australia-Victoria as a partner organisation. Associate Professor Ecosse L. Lamoureux is the principal investigator (PI) of the study and is funded by a National Health and Medical Research Council (NHMRC) Senior Research Fellowship. The Centre for Eye Research Australia receives Operational Infrastructure Support from the Victorian Government and NHMRC Centre for Clinical Research Excellence in Eye Disease (529923).