Differential item functioning and health assessment
Differential item functioning and health assessment
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DOI：
10.1007/s11136-007-9184-6
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发表时间：
2007-01-01
影响因子：
3.5
通讯作者：
Fleishman, John A.
中科院分区：
文献类型：
--
作者：
Teresi, Jeanne A.;Fleishman, John A.
建立测量等效性很重要，因为不准确的评估可能导致对研究效果的不正确估计，以及在个体和临床水平上的次优决策。差异项目功能测验是研究测量等效性的一种方法。一个项目（即，一个较长量表中的问题）如果项目响应在各组之间不同（例如，性别、种族），控制被测量的结构的估计。与教育和能力倾向测试等其他环境相比，健康领域的应用之间的区别在于，有许多与健康有关的结构和每种结构的多种衡量标准，其中很少有得到严格评价的。本文讨论了项目功能差异检测的几种方法，包括非参数和参数方法，如逻辑回归，以及基于项目反应理论的方法。提供了DIF检测的基本定义和标准，以及进行分析的步骤。提出了建议，并讨论了未来的方向。
Establishing measurement equivalence is important because inaccurate assessment may lead to incorrect estimates of effects in research, and to suboptimal decisions at the individual, clinical level. Examination of differential item functioning (DIF) is a method for studying measurement equivalence. An item (i.e., one question in a longer scale) exhibits DIF if the item response differs across groups (e.g., gender, race), controlling for an estimate of the construct being measured. A distinction between applications in health, as contrasted with other settings such as educational and aptitude testing, is that there are many health-related constructs and multiple measures of each, few of which have received much critical evaluation. Discussed in this article are several methods for detection of differential item functioning (DIF), including non-parametric and parametric methods such as logistic regression, and those based on item response theory. Basic definitions and criteria for DIF detection are provided, as are steps in performing the analyses. Recommendations are presented and future directions discussed.