Group Sequential Clinical Trial Designs for Composite Endpoints R package gsMeanFreq version 0.1.0 Simulating composite endpoints with recurrent and terminal events under staggered entry, and for constructing one- and two-sample group sequential test statistics and monitoring boundaries based on the mean frequency function. Details will be available in an upcoming publication. Software Imports: dplyr, tibble, pracma, mvtnorm, gsDesign, stats, bdsmatrix, rlang, foreach, survival Qinghua Lian <qlian@mcw.edu> Comprehensive R Archive Network (CRAN) Qinghua Lian [aut, cre], Kwang Woo Ahn [ctb], Soyoung Kim [ctb], Michael J Martens [aut], Brent R. Logan [ctb] GPL-3 2026-02-16 application/tgz https://CRAN.R-project.org/package=gsMeanFreq doi:10.32614/CRAN.package.gsMeanFreq