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MAIHDA 0.1.7

General Updates & New Features

• Added stepwise_pcv() function to sequentially estimate proportional change in variance (PCV) by adding predictors one-by-one.
• Added a fully-featured interactive Shiny Dashboard (via run_maihda_app()) for visual data exploration, model fitting, and performance visualization.
• Improved bootstrap methods for more efficient confidence interval estimation.
• Added missing documentation block for the maihda_sim_data dataset to resolve R CMD check warnings.
• Updated test suite setup: tests/testthat.R was modified to correctly use test_check("MAIHDA") instead of shinytest2.
• Added importFrom(stats, as.formula) for the stepwise_pcv function to prevent undefined warnings.
• Updated introduction.Rmd vignette: added standard CRAN installation instructions, and improved text clarity.

MAIHDA 0.1.0

Initial Release

• Initial CRAN submission
• Added make_strata() function for creating intersectional strata
• Added fit_maihda() function for fitting multilevel models with lme4 (default) or brms engines
• Added summary_maihda() function for variance partition and stratum estimates
• Added predict_maihda() function for individual and stratum-level predictions
• Added plot_maihda() function with three plot types:
  • Caterpillar plots of stratum random effects
  • Variance partition coefficient visualization
  • Observed vs. shrunken estimates comparison
• Added compare_maihda() function for comparing models with bootstrap confidence intervals
• Added comprehensive documentation and vignettes
• Added unit tests for core functionality

Bug Fixes and Improvements

• Enhanced make_strata() to properly handle missing values (NA) in input variables:
  • Observations with missing values in any stratum variable are now assigned NA stratum
  • Missing values are no longer included as valid stratum categories
  • Added comprehensive tests for missing value handling

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.