Competing Risk. Fine and Gray model and C-index

[FP_Italy]

Actually, the concordance option is not available for subdistributional hazard models (Fine and Gray models).

When you use the option event= in a PHREG model you cannot use concordance, ROC ...

How can I compare the predictivity of  these models?

[OsoGris]

I checked with the PHREG developer on this and "currently there are no methods to compare FG models in PHREG".