I'm trying to analyze data where I found that no one failed during the period of the study. This is the Error I got, as I gave the command.
> fitsurv <- coxph(Surv(NumSessions, failed) ~ o + a + n + c + e, data=records) Error in fitter(X, Y, strats, offset, init, control, weights = weights, : NA/NaN/Inf in foreign function call (arg 6) In addition: Warning message: In fitter(X, Y, strats, offset, init, control, weights = weights, : Ran out of iterations and did not converge
is as above.
Can anyone tell me what this means?