Direct and Indirect Treatment Effects–Causal Chains and Mediation Analysis with Instrumental Variables
Direct and Indirect Treatment Effects–Causal Chains and Mediation Analysis with Instrumental Variables
Summary The paper discusses the non-parametric identification of causal direct and indirect effects of a binary treatment based on instrumental variables. We identify the indirect effect, which operates through a mediator (i.e. intermediate variable) that is situated on the causal path between the treatment and the outcome, as well as …