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cure fraction model
2 messages · L... L..., 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
David Winsemius Alameda, CA, USA