I have tried using the %ROC SAS Macro to generate areas under the curve. I am getting areas under the curves that differ from the c-statistic generated by proc logistic. Is this expected? From some of the examples I have seen from SAS papers on ROC curves, the c-stat is equivalent to the area under the curve generated by the ROC macro. I am new to ROC curve-related analysis so I would appreciate your input. Thanks. ... View more