Problem in the loglikelihood computation in frailtypack

General
1

I have coded the following for a dataset of 360 participants.

ff4<- frailtyPenal(Surv(df$Wait, df$Eve)~ cluster(df$id) + df$Sce+ df$Cond + terminal(df$Hit),
formula.terminalEvent = ~df$Sce+ df$Cond +df$Spatial, n.knots = 12, kappa = c(100,100), data = df)
summary(ff4)

however, i am getting following error everytime, I have tried almost all combinations of n.konts and kappa
Warning message:
In frailtyPenal(Surv(df$Wait, df$Eve) ~ cluster(df$id) + df$Sce + :
Problem in the loglikelihood computation. The program stopped abnormally. Please verify your dataset.

Please provide some useful solutions for the error.

2

first thing that looks wrong is the profusion of df$, I would try to write some cleaner code, thats what the data param is for.

note, you have + + inyour code : (df$Sce+ + df$Cond) ; that seems non syntactic.

3

Thank you so much, however, that didnt solved the error. The same error is appearing.
"Warning message:
In frailtyPenal(Surv(df$T1, df$T2, df$Eve) ~ cluster(df$id2) + df$Sce + :
Problem in the loglikelihood computation. The program stopped abnormally. Please verify your dataset. "

Can you suggest something else?

4

I dont understand why you do this; can you try without ?

5

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