[R] Compare AUC of uncorrelated ROC curves

[Karl Knoblick]

Hallo!

I want to compare two uncorrelated ROC curves. One way seems to be the 
comparison of the AUCs.

Although I found the package pROC with he comparison of correlated ROC curves, I 
did not find anything about the comparison of uncorrelated ROC curves.

Does anybody know how to compare the AUC of wo uncorrelated ROC curves?

(Why do I want to do this? I have two samples an older and a newer one.The 
question is, if the diagnostic test (AUC of ROC curve) is better in either the 
older or newer sample or if they are equal.)


Thanks for any help!
Karl