iimm: Improved Inference for Multilevel Models with Few Clusters

This package provides support for inference about linear mixed effects models estimated with ‘lmer’ from package ‘lme4’ using a Student’s t-distribution with degrees of freedom determined by the m-l-1 heuristic or the Kenward-Roger method. The package is available not (yet?) available from CRAN but only on GitHub.

If you have the package devtools installed, you can install the package by