The medrc package is an extension to the package drc that allows you to fit hierarchical dose-response models and provides inferenc for derived parameters like the effective dose or benchmark doses. Parameters are estimated with a two-stage approach using the package metafor, or using the Lindstrom-Bates algorithm implemented in the package nlme.
## You can install medrc from GitHub# install.packages("devtools")## first installing drc and drcDatadevtools::install_github("DoseResponse/drcData")devtools::install_github("DoseResponse/drc")## then installing the development version of medrcdevtools::install_github("DoseResponse/medrc")