Understanding Linear Mixed Models and Cross-Validation: A Practical Guide to Leave-One-Out Cross-Validation in R Using lmer Function from lme4 Package

Mixed Model Repeated Measures from SAS to R: A Comparative Analysis of the lmer() Function in R and Proc Mixed in SAS

Understanding the MEEM Error in Linear Mixed-Effect Models in R: A Step-by-Step Guide to Resolving Multicollinearity Issues

Understanding and Addressing the "Number of Levels" Error in Linear Mixed-Effects Models