Figure 2.

Cancer detection rate (CDR), recall rate, and positive predictive value of a recall (PPV₁) for original criteria based on separate evaluation of these measures and for the updated criteria based on evaluating these measures in combination. Dots represent observed values for 486 BCSC radiologists with at least 1000 screening mammograms: black, acceptable under original and updated criteria; blue acceptable under updated criteria but not original criteria; red, acceptable under neither. Zone A, acceptable under original criteria. Zones B and C, areas of acceptable performance added with updated criteria. Zone B, 3–20% recall rate for radiologists with CDR at least 6/1000. Zone C, 3–15% recall rate and PPV₁ of at least 3% for radiologists with CDR at least 4/1000 but less than 6/1000.