Confounding, interaction, and mediation in multivariable/multivariate ...
Confounding, interaction, and mediation in multivariable/multivariate ...
Confounding, interaction, and mediation in multivariable/multivariate ...
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Mediation<br />
<strong>Confound<strong>in</strong>g</strong><br />
Interaction<br />
Def<strong>in</strong>ition<br />
Determ<strong>in</strong>ation of <strong><strong>in</strong>teraction</strong><br />
Difference from <strong>mediation</strong> <strong>and</strong> confound<strong>in</strong>g<br />
An example about the philosophy<br />
For example, imag<strong>in</strong>e a study that tests the effects of a treatment<br />
of an outcome measure. The treatment variable is composed of<br />
two groups, e.g., treatment <strong>and</strong> control. The results are that the<br />
mean of the treatment group is higher than the mean for the<br />
control group. But what if the research is also <strong>in</strong>terested <strong>in</strong><br />
whether the treatment is equally effective for females <strong>and</strong> males.<br />
That is a difference <strong>in</strong> treatment depend<strong>in</strong>g on gender group. This<br />
is a question of <strong><strong>in</strong>teraction</strong>.<br />
logo<br />
William Wu<br />
Cancer Biostatistics
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