An investigation of the construct validity of the ICECAP-A capability measure
To investigate the construct validity of the ICECAP-A capability wellbeing measure.
A face-to-face interview-administered survey was conducted with 418 members of the UK general population, randomly sampled from the Postcode Address File. Pre-specified hypotheses were developed about the expected associations between individuals’ ICECAP-A responses and their socio-economic circumstances, health and freedom. The hypotheses were investigated using statistical tests of association.
The ICECAP-A responses and scores reflected differences across different health and socioeconomic groups as anticipated, but did not distinguish individuals by the level of local deprivation. Mean ICECAP-A scores reflected individuals’ perceived freedom slightly more closely than did measures of health and happiness.
This study suggests that the ICECAP-A measure can identify expected differences in capability wellbeing in a general population sample. Further work could establish whether self-reported capabilities exhibit desirable validity and acceptability in sub-groups of the population such as patients, social care recipients and informal carers.
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- An investigation of the construct validity of the ICECAP-A capability measure
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Quality of Life Research
Volume 22, Issue 7 , pp 1831-1840
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- Author Affiliations
- 1. Health Economics Unit, School of Health and Population Sciences, Public Health Building, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
- 2. School of Clinical Sciences, University of Bristol, Bristol, UK
- 3. School of Health and Related Research, University of Sheffield, Sheffield, UK
- 4. School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada
- 5. Centre for the Study of Choice, University of Technology Sydney, Sydney, Australia
- 6. National Centre for Social Research, London, UK
- 7. Institute of Epidemiology and Health Care, University College London, London, UK