I try to estimate survival curves based on a Kaplan-Meier estimator using
proc lifetest. However, SAS outputs an error message which I do not manage to circumvent. Can you help me? The data set is available here.
filename work_di "TO BE COMPLETED"; data data; infile work_di("data.txt") dlm="09"x firstobs=2; input id centre time event x $; run; proc lifetest data=data method=KM plots=none; time time * event(0); by centre x; ods output ProductLimitEstimates = surv; run;
NOTE: The LOGLOG transform is used to compute the confidence limits for the quartiles of the survivor distribution. To suppress using this transform, specify CONFTYPE=LINEAR in the PROC LIFETEST statement. ERROR: Floating Point Overflow. NOTE: The data set WORK.SURV has 77 observations and 10 variables. ERROR: Termination due to Floating Point Exception NOTE: The SAS System stopped processing this step because of errors. NOTE: PROCEDURE LIFETEST used (Total process time): real time 0.09 seconds cpu time 0.03 seconds