Wednesday, October 16, 2013

flexsurv, R package,

R package 'flexsurv' provides optim() based parametric fitting. Two parameter Gomertz and Weibull model are included.  The 'flexsurv' use Hessian to build confidence intervals around the maximum likelihood estimate.

I did not see an obvious way to do nested model test using 'flexsurv'.


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