Hey tarek03, yep, the c-statistic is a very used measure and I tought on this comparison but you see, if I just look for the values of the c-statistic I am not able to compare them. But now, whith the ROCCONTRAST I know what to do. But I also think that a very interesting test would be the one, which I could compare the misclassification rate from the models, maybe this could be more specific on the discrimination power of the model. But for this case I don't know yet what to do.
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