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Valuing the ICECAP capability index for older people
Joanna Coast1, Terry N Flynn, Lucy Natarajan
1University of Birmingham, Department of Health Economics, Public Health Building, Birmingham B15 2TT, UK. j.coast@bham.ac.uk
Social Science & Medicine (1982)
|June 24, 2008
Summary
This study introduces the ICECAP index, a new quality of life measure for older adults in health and social care economic evaluations. It values capabilities like attachment and enjoyment, providing a tool for assessing intervention impacts.
Area of Science:
- Health Economics
- Quality of Life Measurement
- Gerontology
Background:
- The capabilities approach offers a framework for valuing well-being beyond health status.
- Existing quality of life measures often lack focus on broader life capabilities relevant to older adults.
- Economic evaluations in health and social care require robust instruments to capture comprehensive outcomes.
Purpose of the Study:
- To develop and value a new instrument, the ICECAP index, based on the capabilities approach for economic evaluations.
- To focus on quality of life attributes pertinent to older populations across health and social care.
- To refine lay terminology and estimate general population values for capability attributes.
Main Methods:
- Iterative qualitative work with 19 UK informants to refine attribute terminology.
- Application of best-worst scaling to estimate general population values (aged 65+) for capability levels.
- Anchoring values from one (full capability) to zero (no capability), with death as zero capability.
Main Results:
- Attachment emerged as the attribute with the greatest impact on overall capability.
- All five conceptual attributes (attachment, security, role, enjoyment, control) significantly contribute to capability valuation.
- Estimated values are feasible for practical application in measuring intervention impacts.
Conclusions:
- The ICECAP index represents a novel application of the capabilities approach in health economics.
- This index provides a valuable tool for economic decision-making in UK health and social care.
- The valuation method using best-worst scaling offers a robust approach for quality of life measurement in older adults.
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