We implement parametric and non parametric mediation analysis. This package performs the methods and suggestions in Imai, Keele and Yamamoto (2010) <doi:10.1214/10-STS321>, Imai, Keele and Tingley (2010) <doi:10.1037/a0020761>, Imai, Tingley and Yamamoto (2013) <doi:10.1111/j.1467-985X.2012.01032.x>, and Imai and Yamamoto (2013) <doi:10.1093/pan/mps040>. In addition to the estimation of causal mediation effects, the software also allows researchers to conduct sensitivity analysis for certain parametric models.
| Version: | 4.5.1 | 
| Depends: | R (≥ 2.15.1), MASS, Matrix, mvtnorm, sandwich | 
| Imports: | lpSolve, Hmisc, lme4 (≥ 1.0), stats, graphics, grDevices, utils, boot | 
| Suggests: | mgcv, quantreg, VGAM, SuppDists, survival, parallel, testthat, speedglm | 
| Published: | 2025-06-07 | 
| DOI: | 10.32614/CRAN.package.mediation | 
| Author: | Dustin Tingley [aut],
  Teppei Yamamoto [aut, cre],
  Kentaro Hirose [aut],
  Luke Keele [aut],
  Kosuke Imai [aut],
  Minh Trinh [aut],
  Weihuang Wong [aut] | 
| Maintainer: | Teppei Yamamoto  <tyamam at waseda.jp> | 
| License: | GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] | 
| URL: | https://imai.princeton.edu/projects/mechanisms.html | 
| NeedsCompilation: | no | 
| Citation: | mediation citation info | 
| Materials: | README, NEWS, ChangeLog | 
| In views: | CausalInference, Epidemiology, Psychometrics | 
| CRAN checks: | mediation results |