Hello everyone, I am trying to develop a test to distinguish between two groups (0 and 1). There are two tests A and B have different ROC curves which I have been able to plot individually. However I want to generate a graph that displays the ROC curves for A, B and A*B in the same panel. Can anyone help me with this?
One way is to make use of the ROC Table which exists after you choose to make the ROC plot. Basically, for each test make the ROC Table into a data table, concatenate them using the option to create a new column identifying the source tables, then use Overlay Plot with the plots grouped by source table and turning on Overlay by Groups. You can do this interactively or with something like the following example which I pieced together by saving scripts after doing it interactively: