University of Technology Sydney, Centre for the Study of Choice (CenSoC), NSW, Australia.
Appl Health Econ Health Policy. 2011 Sep 1;9(5):317-29. doi: 10.2165/11594150-000000000-00000.
The Investigating Choice Experiments for the Preferences of Older People (ICEPOP) programme developed a capability-based measure of general quality of life (QOL): the ICEPOP CAPability (ICECAP-O) instrument. ICECAP-O was originally intended for use in the economic evaluation of health and social care interventions, but there is increasing interest in using it to quantify differences in QOL in cross-sectional data.
The objective of this study was to assess the construct validity of the overall ICECAP-O scores and quantify differences in QOL associated with various factors in a multivariable regression model among residents of a British city.
ICECAP-O was administered as part of a survey of 4304 citizens of a British city. QOL values in only those respondents aged ≥65 years (n = 809) were compared across subgroups using univariable analyses and multivariable regression models.
QOL values were associated with differences in responses to a variety of questions about respondents' socioeconomic status, locality, contact with others, participation, health and social support. Multivariable regression results showed that poor physical and psychological health were associated with 4-7% lower QOL. Living alone and infrequent socializing were each associated with an approximately 2.5% impairment in QOL. Feeling unsafe after dark was associated with an 8% impairment, whilst those without a faith experienced 5% lower QOL on average. Distribution of ICECAP-O values by electoral ward enabled the identification of areas of deprivation, although the associations were strong only for enjoyment and control.
ICECAP-O provides policy makers with robust quantitative evidence of differences in QOL. It offers local government an opportunity to evaluate the effects of health and other interventions, and to make comparisons across sectors for which it is responsible. It also demonstrates good ability to compare impairments in QOL associated with sociodemographic, health and attitudinal variables.
老年人偏好调查实验（ICEPOP）计划开发了一种基于能力的综合生活质量（QOL）衡量标准：ICEPOP 能力（ICECAP-O）工具。ICECAP-O 最初旨在用于健康和社会保健干预措施的经济评估，但人们越来越有兴趣使用它来量化横断面数据中 QOL 的差异。
本研究旨在评估总体 ICECAP-O 评分的构念效度，并在英国城市居民的多变量回归模型中量化与各种因素相关的 QOL 差异。
ICECAP-O 作为英国一城市 4304 名公民调查的一部分进行了管理。仅对年龄≥65 岁的受访者（n=809）进行了单变量分析和多变量回归模型，比较了不同亚组之间的 QOL 值。
QOL 值与受访者社会经济地位、所在地、与他人的联系、参与度、健康和社会支持等各种问题的回答差异有关。多变量回归结果表明，身体和心理健康状况较差与 QOL 降低 4-7%有关。独居和社交活动不频繁，分别导致 QOL 降低约 2.5%。天黑后感到不安全与 QOL 降低 8%有关，而没有信仰的人平均 QOL 降低 5%。按选区分配 ICECAP-O 值可以识别贫困地区，尽管只有在享受和控制方面，关联才很强。
ICECAP-O 为决策者提供了 QOL 差异的可靠定量证据。它为地方政府提供了评估健康和其他干预措施效果的机会，并为其负责的各个部门提供了比较的机会。它还展示了比较与社会人口学、健康和态度变量相关的 QOL 受损的良好能力。
