The ICECAP-A (ICEpop CAPability measure for Adults) is a measure of capability for the general adult (18+) population for use in economic evaluation. Unlike most profile measures used in economic evaluations, the ICECAP-A focuses on wellbeing defined in a broader sense, rather than health. The measure covers attributes of wellbeing that were found to be important to adults in the UK.
ICECAP-A comprises five attributes (the lay terms are in brackets):
- Attachment (an ability to have love, friendship and support)
- Stability (an ability to feel settled and secure)
- Achievement (an ability to achieve and progress in life)
- Enjoyment (an ability to experience enjoyment and pleasure)
- Autonomy (an ability to be independent)
The ICECAP-A descriptive system was developed using qualitative methods. A set of UK index values for ICECAP-A have been estimated using a best-worst scaling. Qualitative and quantitative studies of the validity of the ICECAP-A have been conducted with general population and patient samples.
ICECAP-A is free to use, but the use of the measure must be registered with us first. More details on the registration, index values, validity and applications of the ICECAP-A can be found on this website.
Before using ICECAP-A in your study please register with us first. You do not have to pay to use the measure, but please complete the registration form.
Please email a copy of the completed form to Philip Kinghorn. Once registered, you will be sent a version of the instrument in MS Word.
You can download the ICECAP-A questionnaire by clicking on this link. Please note that following piloting of the questionnaire in February 2010, the wording was slightly altered. Please use this updated version (denoted by V2 in the footer) in any studies.
Please remember to register with us before you start, by using the Registration form. A Word version of the questionnaire will be available upon registration.
If you have any questions about using ICECAP-A in your study please contact Joanna Coast or Philip Kinghorn
Please click here to download guidance on the scoring of the ICECAP-A instrument and for the STATA code
A Welsh translation of the ICECAP-A has been developed by Gwerfyl Roberts and colleagues in the School of Healthcare Sciences at Bangor University. You can obtain the Welsh translation of the questionnaire by clicking here.
A Dutch translation of ICECAP-O has been developed by Manuela Joore from Maastricht University Medical Center, Netherlands. You can obtain the Dutch translation of the questionnaire by clicking here.
Once again, please remember to register use with us before using any versions of the questionnaire by completing the registration form and emailing to Philip Kinghorn.
The development of the ICECAP-A measure is detailed in:
Al-Janabi H, Flynn T, Coast J. (2012) Development of a self-report measure of capability wellbeing for adults: the ICECAP-A. Quality of Life Research 21: 167-176 (DOI: 10.1007/s11136-011-9927-2).
UK index values for the ICECAP-A are presented in:
Flynn TN, Huynh E, Peters TJ, Al-Janabi H, Moody A, Clemens S, Coast J. Scoring the ICECAP-A capability instrument. Estimation of a UK general population tariff. Health Economics. Online first: doi: 10.1002/hec.3014
Evidence about reliability, validity and feasibility of use can be found in:
Al-Janabi H, Peters TJ, Brazier J, Bryan S, Flynn TN, Clemens S, Moody A, Coast J. (2013) An investigation of the construct validity of the ICECAP-A capability measure. Quality of Life Research. 22: 1831-1840 (doi: 10.1007/s11136-012-0293-5)
Al-Janabi H, Keeley T, Mitchell P, Coast J. (2013) Can capabilities be self-reported? A think-aloud study. Social Science and Medicine. 87: 116-122
Keeley T, Al-Janabi H, Lorgelly P & Coast J. (2013) A Qualitative Assessment of the Content Validity of the ICECAP-A and EQ-5D-5L and Their Appropriateness for Use in Health Research. PLoS ONE 8(12)