mgcv, quantreg, VGAM, SuppDists, lme4 (>= 1.0), arm, survival
mediation is a publicly available R package that allows both parametric and nonparametric causal mediation analysis.  It implements the methods and suggestions in Imai, Keele and Yamamoto (2010), Imai, Keele and Tingley (2010), Imai, Tingley and Yamamoto (2013) and Imai and Yamamoto (2013). In addition to the estimation of causal mediation effects, the software also allows researchers to conduct sensitivity analysis for certain parametric models.

mgcv, quantreg, VGAM, SuppDists, lme4 (>= 1.0), arm,
survival, parallel
mediation is a publicly available R package that allows both parametric and nonparametric causal mediation analysis.  It implements the methods and suggestions in Imai, Keele and Yamamoto (2010), Imai, Keele and Tingley (2010), Imai, Tingley and Yamamoto (2013), Imai and Yamamoto (2013) and Yamamoto (2013). In addition to the estimation of causal mediation effects, the software also allows researchers to conduct sensitivity analysis for certain parametric models.

R (>= 2.15.1), MASS, Matrix, lpSolve, sandwich, mvtnorm
mgcv, quantreg, VGAM, SuppDists, lme4 (>= 1.0), survival,
parallel
mediation allows both parametric and nonparametric causal mediation analysis.  It implements the methods and suggestions in Imai, Keele and Yamamoto (2010), Imai, Keele and Tingley (2010), Imai, Tingley and Yamamoto (2013), Imai and Yamamoto (2013) and Yamamoto (2013). In addition to the estimation of causal mediation effects, the software also allows researchers to conduct sensitivity analysis for certain parametric models.

R (>= 2.15.1), MASS, Matrix, mvtnorm, sandwich

We implement parametric and non parametric mediation analysis. This package performs the methods and suggestions in Imai, Keele and Yamamoto (2010), Imai, Keele and Tingley (2010), Imai, Tingley and Yamamoto (2013), Imai and Yamamoto (2013) and Yamamoto (2013). In addition to the estimation of causal mediation effects, the software also allows researchers to conduct sensitivity analysis for certain parametric models.