Cronbach's alpha
Cronbach's alpha
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DOI：
10.1136/bmj.314.7080.572
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发表时间：
1997-02-22
影响因子：
--
通讯作者：
Altman, DG
中科院分区：
文献类型：
--
作者：
Bland, JM;Altman, DG
医学中的许多量，如焦虑或残疾程度，是不可能明确测量的。相反，我们提出一系列问题，并将答案联合收割机组合成一个单一的数值。通常，这是通过简单地从每个答案中添加一个分数来完成的。例如，mini-HAQ是为脊髓型颈椎病患者开发的损伤测量。1这有10个项目（表1））记录了在进行日常活动时所经历的困难程度。每个项目的评分从1（没有难度）到4（不能做）。将10个项目的评分相加以给出mini-HAQ评分。
Many quantities of interest in medicine, such as anxiety or degree of handicap, are impossible to measure explicitly. Instead, we ask a series of questions and combine the answers into a single numerical value. Often this is done by simply adding a score from each answer. For example, the mini-HAQ is a measure of impairment developed for patients with cervical myelopathy. 1 This has 10 items (table 1)) recording the degree of difficulty experienced in carrying out daily activities. Each item is scored from 1 (no difficulty) to 4 (can't do). The scores on the 10 items are summed to give the mini-HAQ score.