Simulate Survival Data R package simsurv version 1.0.1 CRAN Task View: Survival (https://CRAN.R-project.org/view=Survival) Simulate survival times from standard parametric survival distributions (exponential, Weibull, Gompertz), 2-component mixture distributions, or a user-defined hazard, log hazard, cumulative hazard, or log cumulative hazard function. Baseline covariates can be included under a proportional hazards assumption. Time dependent effects (i.e. non-proportional hazards) can be included by interacting covariates with linear time or a user-defined function of time. Clustered event times are also accommodated. The 2-component mixture distributions can allow for a variety of flexible baseline hazard functions reflecting those seen in practice. If the user wishes to provide a user-defined hazard or log hazard function then this is possible, and the resulting cumulative hazard function does not need to have a closed-form solution. For details see the supporting paper <doi:10.18637/jss.v097.i03>. Note that this package is modelled on the 'survsim' package available in the 'Stata' software (see Crowther and Lambert (2012) <https://www.stata-journal.com/sjpdf.html?articlenum=st0275> or Crowther and Lambert (2013) <doi:10.1002/sim.5823>). Software Depends: R (>= 3.3.0) Imports: methods, stats Suggests: BB (>= 2014.10.1), eha (>= 2.4.5), flexsurv (>= 1.1.0), knitr (>= 1.15.1), MASS, rmarkdown, rstpm2 (>= 1.4.1), survival (>= 2.40.1), testthat (>= 1.0.2) Sam Brilleman <sam.brilleman@gmail.com> Comprehensive R Archive Network (CRAN) Sam Brilleman [cre, aut, cph], Alessandro Gasparini [ctb] GPL (>= 3) file LICENSE (https://CRAN.R-project.org/package=simsurv/LICENSE) 2026-01-22 application/tgz https://CRAN.R-project.org/package=simsurv doi:10.32614/CRAN.package.simsurv