When to use agreement versus reliability measures
When to use agreement versus reliability measures
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DOI：
10.1016/j.jclinepi.2005.10.015
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发表时间：
2006-10-01
影响因子：
7.2
通讯作者：
Bouter, Lex M.
中科院分区：
文献类型：
--
作者：
de Vet, Henrica C. W.;Terwee, Caroline B.;Bouter, Lex M.
背景：重复性与重复测量提供相似结果的程度有关。一致性参数通过估计重复测量中的测量误差来评估重复测量的结果有多接近。可靠性参数评估研究对象(通常是人)是否能够彼此区分，尽管存在测量误差。在这种情况下，测量误差与人与人之间的可变性有关。因此，可靠性参数高度依赖于研究样本的异质性，而基于测量误差的一致性参数更多地是测量工具的纯特征。方法与结果：以不同物理治疗师测量肩部主诉患者手臂活动范围的评分者间研究为例，说明了连续变量的可靠性参数与一致性参数之间的区别和关系。结论：如果研究问题涉及人的区别，可靠性参数是最合适的。但如果目的是衡量健康状况的变化，这在临床实践中经常是这样的，那么一致性参数是首选的。(C)2006 Elsevier Inc.保留所有权利。
Background: Reproducibility concerns the degree to which repeated measurements provide similar results. Agreement parameters assess how close the results of the repeated measurements are, by estimating the measurement error in repeated measurements. Reliability parameters assess whether study objects, often persons, can be distinguished from each other, despite measurement errors. In that case, the measurement error is related to the variability between persons. Consequently, reliability parameters are highly dependent on the heterogeneity of the study sample, while the agreement parameters, based on measurement error, are more a pure characteristic of the measurement instrument.Methods and Results: Using an example of an interrater study, in which different physical therapists measure the range of motion of the arm in patients with shoulder complaints, the differences and relationships between reliability and agreement parameters for continuous variables are illustrated.Conclusion: If the research question concerns the distinction of persons, reliability parameters are the most appropriate. But if the aim is to measure change in health status, which is often the case in clinical practice, parameters of agreement are preferred. (c) 2006 Elsevier Inc. All rights reserved.