Multivariate Age-Period-Cohort (MAPC) Modeling for Health Data R package MAPCtools version 0.1.0 Bayesian multivariate age-period-cohort (MAPC) models for analyzing health data, with support for model fitting, visualization, stratification, and model comparison. Inference focuses on identifiable cross-strata differences, as described by Riebler and Held (2010) <doi:10.1093/biostatistics/kxp037>. Methods for handling complex survey data via the 'survey' package are included, as described in Mercer et al. (2014) <doi:10.1016/j.spasta.2013.12.001>. Software Depends: R (>= 3.5) Imports: dplyr, tidyselect, fastDummies, stringr, rlang, tidyr, ggplot2, viridis, scales, purrr, grid, gridExtra, ggpubr, tibble, survey Suggests: testthat (>= 3.0.0), knitr, rmarkdown, INLA Lars Vatten <lavatt99@gmail.com> Comprehensive R Archive Network (CRAN) Lars Vatten [aut, cre] MIT + file LICENSE (https://CRAN.R-project.org/package=MAPCtools/LICENSE) 2025-06-25 application/tgz https://CRAN.R-project.org/package=MAPCtools doi:10.32614/CRAN.package.MAPCtools