RELIABILITY AND VALIDITY OF SCREENING SCALES - EFFECT OF REDUCING SCALE LENGTH
RELIABILITY AND VALIDITY OF SCREENING SCALES - EFFECT OF REDUCING SCALE LENGTH
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DOI：
10.1016/0895-4356(89)90027-9
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发表时间：
1989-01-01
影响因子：
7.2
通讯作者：
YAGER, TJ
中科院分区：
文献类型：
--
作者：
SHROUT, PE;YAGER, TJ
自我报告测量通常作为多阶段病例识别程序的第一阶段有用，用于估计未治疗疾病的比率，但这种测量容易受到几个不可靠来源的影响。通过采用由多个重复项目组成的完善的筛选量表，可以大大提高受访者报告的可靠性。出现的一个实际问题是，只使用原来比额表的一部分是否可以节省面试时间。根据筛查的敏感性和特异性，对缩短既定量表的成本进行了统计建模，并利用从精神病患者样本和社区对照中获得的心理健康数据评估了模型的稳健性。统计模型和经验例子都表明，从高度可靠的措施中删除的项目可以在敏感性或特异性上没有太大损失。在缩短筛选量表时，提出了选择项目子集的建议，并以抑郁症的筛选量表为例说明了这些建议。
Self-report measures are often useful as the first pahse of a multiphase case identification procedure for estimating rates of untreated disorder, but such measures are susceptible to several sources of unreliability. The reliability of respondents'' reports can be greatly improved by employing a well-established screening scale composed of multiple replicate items. A practical question that arises is wehther interview time can be saved by using only a portion of the original scale. The cost of shortening established scales in terms of the sensitivity and specificity of the screen is modelled statistically, and the robustness of the model is assessed using mental health data obtained on samples of psychiatric patients and community controls. Both the statistical model and the empirical examples suggest that items from highly reliable measures can be dropped without much loss in sensitivity or specificity. Suggestions are made for selecting subsets of items when shortening a screening scale and these are illustrated with screening scales for depression.