Receiver operating characteristic (ROC) curves are useful statistical tools for medi-
cal diagnostic testing. It has been proved its capability to assess diagnostic marker’s
ability to distinguish between healthy and diseased subjects and to compare differ-
ent diagnostic markers. In this paper we introduce non parametric ROC summary
statistics to assess a ROC curve across the entire range of FPFs ∈ (0, 1) as well as
over a restricted range of FPFs and compare them with some existing ones through a
simulation study and through some real data examples. We also show their capability
to compare two diagnostic markers.