[R] cure fraction model

[David Winsemius]

On Dec 19, 2013, at 5:32 AM, L... L... wrote:

> Dear all, is there an R function to simulate random observations from a cure fraction model (random observations with long-term survivos). 
> Some references how can I do this will be welcome.
> 
Shouldn't be too hard to set up a mixture of weibull distributed event times with one component having a parameter less than "exponential" (to represent the cured fraction with survival typical of an average human population) and another with a hazard like an "exponential" or worse to represent the non-cured fraction. Watch out about how the shape parameters are defined. The survival package uses different parameterization than the rweibull definitions.

library(survival)
?survreg
?rweibull

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David Winsemius
Alameda, CA, USA