MEASURING HEALTH-STATUS - WHAT ARE THE NECESSARY MEASUREMENT PROPERTIES
MEASURING HEALTH-STATUS - WHAT ARE THE NECESSARY MEASUREMENT PROPERTIES
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DOI：
10.1016/0895-4356(92)90194-r
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发表时间：
1992-12-01
影响因子：
7.2
通讯作者：
JAESCHKE, R
中科院分区：
文献类型：
--
作者：
GUYATT, GH;KIRSHNER, B;JAESCHKE, R
越来越多地认识到，目标是在单个时间点检测受试者之间的差异的仪器（判别仪器）和目标是检测受试者内的纵向变化的仪器（评估仪器）所需的不同测量特性。到目前为止，评价工具的要求已被提出为再现性、有效性和响应性（即检测随时间变化的能力）。另一种概念是，任何文书都需要两个关键的计量特性。一个是有效性，另一个是高信噪比。对于鉴别性仪器，信噪比可以总结为可靠性系数;对于评价性仪器，可以总结为反应性指数或系数。这一提法可以简化和澄清对健康状况计量问题的理解和教学。
The different measurement properties necessary for instruments whose goal is to detect differences between subjects at a single point in time (discriminative instruments) and those whose goal is to detect longitudinal change within subjects (evaluative instruments) is becoming increasingly recognized. Up to now, requirements for evaluative instruments have been presented as reproducibility, validity, and responsiveness (i.e. the ability to detect change over time). An alternative conceptualization would characterize any instrument as requiring two crucial measurement properties. One is validity, the other a high ratio of signal to noise. For discriminative instruments, the signal to noise ratio can be summarized in a reliability coefficient; for evaluative instruments, in a responsiveness index or coefficient. This formulation can simplify and clarify the understanding and teaching of issues in health status measurement.