Figure 1. Comparative graphical illustration of the AUC for all classifications by study design (normal-abnormal) - Trial 1 (A) and Trial 2 (D); Comparative graphical illustration of the AUC for easy classifications (normal versus severely abnormal) by study design- Trial 1 (B) and Trial 2 (E); Comparative graphical illustration of the AUC for difficult classifications (normal versus mildly abnormal) by study design- Trial 1 (C) and Trial 2 (F).
