Overview

DirectEffects is an R package to estimate controlled direct effects (CDEs), which are the effect of a treatment fixing a set of downstream mediators to particular values. As of now, the package supports sequential g-estimation and a two-stage matching approach called telescope matching. For more information on how CDEs can be useful for applied research and a brief introduction to sequential g-estimation, see Acharya, Blackwell, and Sen (2016). For more on the telescope matching procedure, see Blackwell and Strezhnev (2022).

Installation

You can install DirectEffects via CRAN for the current stable version or via GitHub for the development version.

# Installing from CRAN
install.packages("DirectEffects")

# Installing development version from Github:
# install.packages("devtools")
devtools::install_github("mattblackwell/DirectEffects", build_vignettes = TRUE)

Usage

The main functions for estimating CDEs in DirectEffects are:

DirectEffects also provides diagnostics for these two approaches, including sensitivity analyses and balance checks.