The validity of the MacNew Quality of Life in heart disease questionnaire

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The validity of the MacNew Quality of Life in heart disease questionnaire

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BioMed Central
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PMC
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  • Medicine
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Abstract

1477-7525-2-6.fm ral Health and Quality of Life Outcomes ss BioMed Cent Open AcceResearch The validity of the MacNew Quality of Life in heart disease questionnaire Martin Dempster*1, Michael Donnelly2 and Christina O'Loughlin3 Address: 1School of Psychology, Queen's University, David Keir Building, 18–30 Malone Road Belfast, UK, 2Department of Epidemiology & Public Health, Queen's University Belfast, UK and 3International Business School, Isle of Man, UK Email: Martin Dempster* - [email protected]; Michael Donnelly - [email protected]; Christina O'Loughlin - christina.o'[email protected] * Corresponding author Abstract Background: A previous review suggested that the MacNew Quality of Life Questionnaire was the most appropriate disease-specific measure of health-related quality of life among people with ischaemic heart disease. However, there is ambiguity about the allocation of items to the three factors underlying the MacNew and the factor structure has not been confirmed previously among the people in the UK. Methods: The MacNew Questionnaire and the SF-36 were administered to 117 newly admitted patients to a tertiary referral centre in Northern Ireland. All patients had been diagnosed with ischaemic heart disease. Results: A confirmatory factor analysis was conducted on the factor structure of the MacNew and the model was found to be an inadequate fit of the data. A quantitative and qualitative analysis of the items suggested that a five factor solution was more appropriate and this was validated by confirmatory factor analysis. This new structure also displayed strong evidence of concurrent validity when compared to the SF-36. Conclusion: We recommend that researchers should submit scores obtained from items on the MacNew to secondary analyses after being grouped according to the factor structure proposed in this paper, in order to explore further the most appropriate grouping of items. Background The goals of health and social care intervent

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