Create AUC in proc phreg with time-dependent covariates

[maxraven09]

Hi,

I am trying to get an AUC curve for the model and I used the code:

proc phreg data = stanlong plots=AUC rocoptions(method=ipcw iauc);
model (start,stop)*dead2(0) = plant surg ageaccpt / ties = efron;
run;
But I got an error message from the system:

Neither concordance nor ROC analysis is performed with the START/STOP specification of time.

Is there a way to obtain the AUC when I run proc phreg with time-dependent covariates?

Many thanks!!