Thanks to Kit Baum, the -survsim- package has been updated on SSC. This is a complete re-write, with many new features.

-survsim- simulates survival data from a parametric distribution, a user-defined distribution, a cause-specific hazards competing risks model, a general multi-state model, or from an estimated -merlin- model. Baseline covariates and time-dependent effects can be specified when defining a data-generating model. Delayed entry/left truncation is allowed.

For more details and lots of examples, a pre-print is available hear:
www.mjcrowther.co.uk/publication/survsim

Thanks,
Michael