caa a22 4500 606179410 CHVBK 20210128100801.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s11136-015-0980-0 doi (NATIONALLICENCE)springer-10.1007/s11136-015-0980-0 A longitudinal assessment of the responsiveness of the ICECAP-A in a randomised controlled trial of a knee pain intervention [Elektronische Daten] [T. Keeley, H. Al-Janabi, E. Nicholls, N. Foster, S. Jowett, J. Coast] Purpose: The ICECAP-A is a simple measure of capability well-being for use with the adult population. The descriptive system is made up of five key attributes: Stability, Attachment, Autonomy, Achievement and Enjoyment. Studies have begun to assess the psychometric properties of the measure, including the construct and content validity and feasibility for use. This is the first study to use longitudinal data to assess the responsiveness of the measure. Methods: This responsiveness study was completed alongside a randomised controlled trial comparing three physiotherapy-led exercise interventions for older adults with knee pain attributable to osteoarthritis. Anchor-based methodologies were used to explore the relationship between change over time in ICECAP-A score (the target measure) and change over time in another measure (the anchor). Analyses were completed using the non-value-weighted and value-weighted ICECAP-A scores. The EQ-5D-3L was used as a comparator measure to contextualise change in the ICECAP-A. Effect sizes, standardised response means and t tests were used to quantify responsiveness. Results: Small changes in the ICECAP-A scores were seen in response to underlying changes in patients' health-related quality of life, anxiety and depression. Non-weighted scores were slightly more responsive than value-weighted scores. ICECAP-A change was of comparable size to change in the EQ-5D-3L reference measure. Conclusion: This first analysis of the responsiveness using longitudinal data provides some positive evidence for the responsiveness of the ICECAP-A measure. There is a need for further research in those with low health and capability, and experiencing larger underlying changes in quality of life. The Author(s), 2015 Capability nationallicence ICECAP-A nationallicence Responsiveness nationallicence Psychometrics nationallicence Keeley T. MRC Midland Hub for Trials Methodology Research, University of Birmingham, B15 2TT, Edgbaston, Birmingham, UK aut Al-Janabi H. Health Economics Unit, School of Health and Population Sciences, Public Health Building, University of Birmingham, B15 2TT, Edgbaston, Birmingham, UK aut Nicholls E. Arthritis Research UK Primary Care Centre, Research Institute for Primary Care and Health Sciences, Keele University, ST5 5BG, Keele, Staffordshire, UK aut Foster N. Arthritis Research UK Primary Care Centre, Research Institute for Primary Care and Health Sciences, Keele University, ST5 5BG, Keele, Staffordshire, UK aut Jowett S. Health Economics Unit, School of Health and Population Sciences, Public Health Building, University of Birmingham, B15 2TT, Edgbaston, Birmingham, UK aut Coast J. MRC Midland Hub for Trials Methodology Research, University of Birmingham, B15 2TT, Edgbaston, Birmingham, UK aut Quality of Life Research Springer International Publishing 24/10(2015-10-01), 2319-2331 0962-9343 24:10<2319 2015 24 11136 https://doi.org/10.1007/s11136-015-0980-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11136-015-0980-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Keeley T. MRC Midland Hub for Trials Methodology Research, University of Birmingham, B15 2TT, Edgbaston, Birmingham, UK aut NATIONALLICENCE 700 1- Al-Janabi H. Health Economics Unit, School of Health and Population Sciences, Public Health Building, University of Birmingham, B15 2TT, Edgbaston, Birmingham, UK aut NATIONALLICENCE 700 1- Nicholls E. Arthritis Research UK Primary Care Centre, Research Institute for Primary Care and Health Sciences, Keele University, ST5 5BG, Keele, Staffordshire, UK aut NATIONALLICENCE 700 1- Foster N. Arthritis Research UK Primary Care Centre, Research Institute for Primary Care and Health Sciences, Keele University, ST5 5BG, Keele, Staffordshire, UK aut NATIONALLICENCE 700 1- Jowett S. Health Economics Unit, School of Health and Population Sciences, Public Health Building, University of Birmingham, B15 2TT, Edgbaston, Birmingham, UK aut NATIONALLICENCE 700 1- Coast J. MRC Midland Hub for Trials Methodology Research, University of Birmingham, B15 2TT, Edgbaston, Birmingham, UK aut NATIONALLICENCE 773 0- Quality of Life Research Springer International Publishing 24/10(2015-10-01), 2319-2331 0962-9343 24:10<2319 2015 24 11136