Figure 2:

Confidence scores for true- and false-positive circumscriptions by reader experience. Missed lesions (false-negative findings) do not have a confidence score and are not indicated on these histograms. Abdominal subspecialists indicated greater mean confidence for true-positive markings than did the other readers (P < .001), and trainees indicated less mean confidence for false-positive markings than did the other readers (P < .001). FP = false-positive, TP = true-positive.