Diamond J J
Department of Family Medicine, Jefferson Medical College, Philadelphia, Pennsylvania 19107-5099.
Fam Pract Res J. 1991 Dec;11(4):357-62.
The practical need for short instruments to assess constructs such as general health results in potentially imprecise measurement. According to reliability theory, a consequence of this imprecision is the inclusion of random error in the observed measurement of any construct. To the extent that measures are unreliable, clinicians may find that large changes in obtained measurements must be seen before one can have confidence that a true change in behavior has occurred. Discussion of the standard error of measurement and its application to functional assessment research is included.
使用简短工具来评估诸如总体健康状况等构念的实际需求，可能会导致测量不够精确。根据可靠性理论，这种不精确的一个后果是在对任何构念的观察测量中包含了随机误差。在测量不可靠的程度上，临床医生可能会发现，在有信心认为行为发生了真正变化之前，必须看到所获得的测量值有很大变化。本文还讨论了测量的标准误差及其在功能评估研究中的应用。
