R: Correctly analyse disease recurrence with missing at risk...
md.survnp
R Documentation
Correctly analyse disease recurrence with missing at risk information using population mortality
Description
Estimates the Net and Event free survial using a is non-parametric approach that aims to correct all individuals using the unconditional survival time distribution obtained from the population mortality table.
The idea comes from realizing that the number of observed events in the data equals the number which would be observed in case of a complete data set, but the number of patients at risk does not. Hence, this method adjusts the observed number at risk to mimic the one we would get if the data was complete.