Reduced Piecewise Exponential Estimate/Test Software R package RPEXE.RPEXT version 0.0.2 This reduced piecewise exponential survival software implements the likelihood ratio test and backward elimination procedure in Han, Schell, and Kim (2012 <doi:10.1080/19466315.2012.698945>, 2014 <doi:10.1002/sim.5915>), and Han et al. (2016 <doi:10.1111/biom.12590>). Inputs to the program can be either times when events/censoring occur or the vectors of total time on test and the number of events. Outputs of the programs are times and the corresponding p-values in the backward elimination. Details about the model and implementation are given in Han et al. 2014. This program can run in R version 3.2.2 and above. Software Depends: R (>= 3.2.2) Imports: stats, graphics Suggests: knitr, rmarkdown Gang Han <hangang.true@gmail.com> Comprehensive R Archive Network (CRAN) Gang Han [aut, cre], Yu Zhang [aut] GPL-3 2020-05-21 application/tgz https://CRAN.R-project.org/package=RPEXE.RPEXT doi:10.32614/CRAN.package.RPEXE.RPEXT