ROC

[Xao Ping <xao_ping@yahoo.com>]

Dear All:

Many thanks to Seen Keenan, Brad Biggerstaff, Michael Westphal, Gerrrit Eincher, Frank Harrel and Beth Atkinson for the help with my request about the ROC curves.

After careful study of all the information that was brought to my attention, I successfully wrote my own simple function for calculation of ROC curves, AUC and SE(AUC).

 

However, I have another ROC question, probably much more complicated. Is that possible to theoretically derive the distribution of AUC, or at least its first four cumulants?

If not, then would it be correct to claim that because the AUC is a function of order statistics, then the distribution of AUC is independent, or at least highly conservative, with respect to parent distributions for cases and controls?

Any references/thoughts are greatly appreciated.

 

Thanks again for help

Xao Ping

R&R Pharmakinetics

Taiwan   

---

Do you Yahoo!?
Yahoo! SiteBuilder - Free, easy-to-use web site design software