Jupiter Daniel C
Assistant Professor, Department of Preventive Medicine and Community Health, The University of Texas Medical Branch, Galveston, TX.
J Foot Ankle Surg. 2016 Jul-Aug;55(4):899-902. doi: 10.1053/j.jfas.2016.05.008.
In this Investigators' Corner I look more deeply into the previously discussed phenomenon of effect modification. I revisit an explanation and examples of the phenomenon and then examine how to account for it statistically. Specifically, I show, in detail, how to write a regression equation that includes interaction terms that account for the effect modification. Finally, I look at interpretation of regression coefficients both with and without the presence of effect modification, and the associated interaction terms.
在本期“研究者视角”中，我将更深入地探讨之前讨论过的效应修饰现象。我回顾了该现象的一种解释及示例，然后研究如何从统计学角度对其进行考量。具体而言，我将详细展示如何写出一个包含交互项的回归方程，这些交互项用于解释效应修饰。最后，我探讨了在存在和不存在效应修饰及相关交互项的情况下，回归系数的解释。
