Causal mediation analysis: From simple to more robust strategies for estimation of marginal natural (in)direct effects
因果中介分析:边际自然直接与间接效应的稳健估计策略
This paper aims to provide practitioners of causal mediation analysis with a better understanding of estimation options. We take as inputs two familiar strategies (weighting and model-based prediction) and a simple way of combining them (weighted models), and show how a range of estimators can be generated, with different modeling requirements and robustness properties. The primary goal is to help build intuitive appreciation for robust estimation that is conducive to sound…