Sobel中介效应检验(Sobel's test for mediation)是一种常用的统计方法,用于检验中介效应的存在与大小。在实证研究中,我们经常关注某个自变量对因变量的影响是否通过一个中介变量来传递。通过进行Sobel中介效应检验,我们可以确定自变量对因变量的影响是否通过中介变量产生,并且可以估计中介效应的大小。 在Stata中,进行Sobel...
version1.1.1--5/17/06--*!verion1.0--2/28/05--pbecapprogramdropsgmediation3programdefinesgmediation3,rclass/*sobel-goodmanmediationtests*/version15.0syntaxvarlist(max=1)[if][in],iv(varlistnumericmax=1)///mv(varlistnumericmax=1)[cv(varlistnumeric)quietly///level(integer95)prefix(string)]ma...
Sobel Test Versus Bootstrapping For mediation analysis, bootstrapping is often preferred over the Sobel test because it's believed thatababis generally not exactly normally distributed, especially in smaller samples; bootstrapping is thought to have morepower(that is, result in smaller CI's). ...
Mediation analysis using sobel test for one indirect effectZhiyong ZhangLijuan Wang
Sobel Test If the X coefficient is still significant when testing requirement 4 ofMediation Analysis Basics, we can use theSobel testfor testing requirement 4, This test determines whether the complete path a + b is significant. This is done as shown in range F13:J16 of Figure 4 ofMediation...
Hello stata listers: I recently came across a user written command for doing the sobel goodman mediation test in the link below. The command is sgmediation http://www.ats.ucla.edu/stat/stata/ado/analysis/sgmediation.hlp.htm I believe that this relies on the Baron and Kenny procedure. My ...
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Mediation analysis using sobel test (for complete data only)Zhiyong ZhangLijuan Wang
Calculation for the Sobel test: An interactive calculation tool for mediation tests. Retrieved from http://www.people.ku.edu/~preacher/ sobel/sobel.htm#refsPreacher, K. J., & Leonardelli, G. L. (2003). Calculation for the Sobel Test. An interactive calculation tool for mediation tests. ...
Mediation analysis is an important statistical tool in many research fields, where the joint significance test is widely utilized for examining mediation effects. Nevertheless, the limitation of this mediation testing method stems from its conservative Type I error, which reduces its statistical power ...