An investigation of the construct validity of the ICECAP-A capability measure

作者：Hareth Al‐Janabi, T. J. Peters, John Brazier, Stirling Bryan, Terry N. Flynn, Sam Clemens, Alison Moody, Joanna Coast · 发表于：Quality of Life Research · 年份：2012 · DOI：10.1007/s11136-012-0293-5 · 被引用次数：133 · 研究领域：Psychological Well-being and Life Satisfaction、Income, Poverty, and Inequality、Health Systems, Economic Evaluations, Quality of Life

PURPOSE: To investigate the construct validity of the ICECAP-A capability wellbeing measure. METHODS: 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. RESULTS: 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. CONCLUSION: 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.