r2mlm

Generates both total- and level-specific R-squared measures from Rights and Sterba’s (2019) doi:10.1037/met0000184 framework of R-squared measures for multilevel models with random intercepts and/or slopes, which is based on a complete decomposition of variance. Additionally generates graphical representations of these R-squared measures to allow visualizing and interpreting all measures in the framework together as an integrated set. This framework subsumes 10 previously-developed R-squared measures for multilevel models as special cases of 5 measures from the framework, and it also includes several newly-developed measures. Measures in the framework can be used to compute R-squared differences when comparing multilevel models (following procedures in Rights & Sterba (2020) doi:10.1080/00273171.2019.1660605). Bootstrapped confidence intervals can also be calculated. To use the confidence interval functionality, download bootmlm from https://github.com/marklhc/bootmlm.

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