Regression Analysis in Interval-Censored Multistate Models R package IntervalCensoredMultistateR2 version 1.0.0 Estimates regression coefficients in proportional hazards models for interval-censored multistate data. Individuals may be observed at irregular times and their states may be partially observed. Allowable transitions and transition-specific covariate effects can be specified. The numerical estimation is implemented in 'C++' using 'RcppArmadillo'. The method implemented in this package is described in You, Liu, and Krischer (2024) <doi:10.1002/sim.10079>. Software Depends: R (>= 3.6.0) Imports: Rcpp (>= 1.0.11) LinkingTo: Rcpp, RcppArmadillo Suggests: testthat (>= 3.0.0) Lu You <lu.you@epi.usf.edu> Comprehensive R Archive Network (CRAN) Lu You [aut, cre] GPL-3 2026-08-06 application/tgz https://CRAN.R-project.org/package=IntervalCensoredMultistateR2 doi:10.32614/CRAN.package.IntervalCensoredMultistateR2