Statistical procedures for survival data are available from SAS, Splus and other statistical packages. What is special about CanSurv?
Many statistical packages are available for the analysis of survival data, and most of them fit standard survival models for data from clinical studies, i.e., cause-specific survival data with continuous survival times. CanSurv is designed for population-based survival data, which are usually grouped into life tables and the measure of net survival is relative survival. Besides the standard survival models, CanSurv can also fit mixture cure models. (See Question 3 for more detail).