Figure 1: ROC method plots of all (5460) consensus methods analyzed in this study. ROC methods (SN vs. 1-SP*) were plotted for A) all consensus methods, B) individual (O), C) intersection (I), and D) union (U) consensus methods analyzed. The following search engines were employed: Mascot (M), Sequest (S), X!Tandem (X) and Phenyx (P).