Mediation with External Summary Statistic Information R package messi version 0.1.2 Fits the MESSI, hard constraint, and unconstrained models in Boss et al. (2023) <doi:10.48550/arXiv.2306.17347> for mediation analyses with external summary-level information on the total effect. Software Depends: R (>= 3.6.2) Imports: MASS, ggplot2, patchwork, progress Michael Kleinsasser <mkleinsa@umich.edu> Comprehensive R Archive Network (CRAN) Jonathan Boss [aut], Bhramar Mukherjee [aut], Michael Kleinsasser [cre] GPL-2 2025-01-09 application/tgz https://CRAN.R-project.org/package=messi doi:10.32614/CRAN.package.messi