Equivalence of the mediation, confounding and suppression effect.
Equivalence of the mediation, confounding and suppression effect.
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DOI：
10.1023/a:1026595011371
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发表时间：
2000-12-01
期刊：
影响因子：
--
通讯作者：
Lockwood, C M
中科院分区：
文献类型：
--
作者：
MacKinnon, D P;Krull, J L;Lockwood, C M
本文描述了调解、混淆和压制之间的统计相似性。在分析中加入第三个变量后，通过测量自变量和因变量之间关系的变化来量化每一个变量。调解和混淆在统计上是相同的，只能从概念上加以区分。在中介效应研究方法的基础上，提出了混杂效应和抑制效应可信区间的确定方法。虽然对效应和标准误差的统计估计是相同的，但这三种类型的效应在概念上有重要的区别。
This paper describes the statistical similarities among mediation, confounding, and suppression. Each is quantified by measuring the change in the relationship between an independent and a dependent variable after adding a third variable to the analysis. Mediation and confounding are identical statistically and can be distinguished only on conceptual grounds. Methods to determine the confidence intervals for confounding and suppression effects are proposed based on methods developed for mediated effects. Although the statistical estimation of effects and standard errors is the same, there are important conceptual differences among the three types of effects.