'Finding area unde the curve in a Gompertz distribution in R
I am trying to fit a gompertz model to survival data. I am using the package 'flexsurv', and after setting up the data I use the following especification:
Gompertz.fit <- flexsurvreg(surv.age ~ Region + Sex + Income, data = SA_Data, dist = "gompertz")
As I want to estimate the area under the curve but couldn't find a command, I thought about estimating the AUC "by hand", for which I need the gamma parameter. However, I can't seem to find it. When I try the survreg to estimate the parameters I get the following answer
> result.survreg.0 <- survreg(Surv(Age_At_DC, status)~1, data = SA_Data, dist = "gompertz") Error in match.arg(dist, names(survreg.distributions)) : 'arg' should be one of “extreme”, “logistic”, “gaussian”, “weibull”, “exponential”, “rayleigh”, “loggaussian”, “lognormal”, “loglogistic”, “t”
Has anyone else estimated the AUC with a gompertz distribution in R?
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