⚠️There's a newer version (2.2.2) of this package.Take me there.
flexsurv (version 1.1.1)
Flexible Parametric Survival and Multi-State Models
Description
Flexible parametric models for time-to-event data,
including the Royston-Parmar spline model, generalized gamma and
generalized F distributions. Any user-defined parametric
distribution can be fitted, given at least an R function defining
the probability density or hazard. There are also tools for
fitting and predicting from fully parametric multi-state models.