Efficient Nonparametric Inference for Mediation Analysis with Nonignorable Missing Confounders
混杂变量非可忽略缺失下中介分析的有效非参数推断
Mediation analysis is widely used for exploring treatment mechanisms; however, it faces challenges when nonignorable missing confounders are present. Efficient inference of mediation effects and the efficiency loss due to nonignorable missingness have been rarely studied in the literature because of the difficulties arising from the ill-posed inverse problem. In this paper, we propose a general shadow variable framework for identifying mediation effects, allowing shadow…