Mediation Analysis using Interventional Effects
Implementing the interventional effects for mediation analysis for up to 3 mediators.
The methods used are based on VanderWeele, Vansteelandt and Robins (2014) <10.1097>,
Vansteelandt and Daniel (2017) <10.1097> and Chan and Leung (2020; unpublished manuscript, available on request from the author of this package).
Linear regression, logistic regression and Poisson regression are used for continuous, binary
and count mediator/outcome variables respectively.10.1097>10.1097>