Late life function and disability instrument: I. Development and evaluation of the disability component
Late life function and disability instrument: I. Development and evaluation of the disability component
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DOI：
10.1093/gerona/57.4.m209
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发表时间：
2002-04-01
影响因子：
5.1
通讯作者：
Ashba, J
中科院分区：
文献类型：
--
作者：
Jette, AM;Haley, SM;Ashba, J
背景旨在影响晚年残疾的临床和社区干预措施的有效性评估工作受到当前仪器的限制的严重阻碍。需要在概念上更加健全和更有针对性的残疾衡量标准。应用Nagi的残疾模型，我们写了问卷项目，评估残疾的频率和限制方面的性能的25个生活任务。我们评估了他们的有效性和重测信度与150个种族和种族多样化的成年人，年龄在60岁及以上，有一系列的功能限制，使用因素分析和Rasch分析技术来检查和完善的工具。我们的分析导致了一个16项残疾组成部分，有两个方面，一个侧重于频率的性能和其他解决生活任务的性能限制，在每个维度内有两个残疾域。频率维度由个人角色域和社会角色域组成，限制维度由工具角色域和管理角色域组成。已知功能限制组的汇总评分的预期差异支持该工具的有效性。每个总体维度总分的重复性的重测组内相关性为中度到高度（组内相关系数为0.68 - 0.82）。晚年功能和残疾工具有潜力在各种各样的生活任务中用相对较少的项目评估有意义的残疾概念。
Background. Efforts to evaluate the effectiveness of clinical and community-based interventions designed to impact late-life disability have been hindered significantly by limitations in current instrumentation. More conceptually sound and responsive measures of disability are needed.Methods. Applying Nagi's disablement model, we wrote questionnaire items that assessed disability in terms of frequency and limitation in performance of 25 life tasks. We evaluated their validity and test-retest reliability with 150 ethnically and racially diverse adults aged 60 and older who had a range of functional limitations, using factor analysis and Rasch analytic techniques to examine and refine the instrument.Results. Our analyses resulted in a 16-item disability component with two dimensions, one focused on frequency of performance and the other addressing limitation in performance of life tasks, with two disability domains within each dimension. The frequency dimension consisted of a personal and a social role domain, and the limitation dimension consisted of an instrumental and a management role domain. Expected differences in summary scores of known-functional limitation groups support the validity of this instrument. Test-retest intraclass correlations of the reproducibility of each overall dimension summary score were moderate to high (intraclass correlation coefficients .68-.82).Conclusions. The Late-Life Function and Disability Instrument has potential to assess meaningful concepts of disability across a wide variety of life tasks with relatively few items.