Individual success varied from 11 to 24 more cancer cases detected by AWBU. As a percentage of the cancers detected with mammography the range in improvement was 42–150%. Not only did all readers find more cancers individually, but all found 16–29% more cancers than the best mammography reader did with mammography alone. For the best performing mammography reader the cancer detections added by AWBU was predictably lower, as more cancers had already been identified with mammography. For the poorest performer on mammography, the addition of AWBU resulted in a 150% improvement, bringing his overall cancer detection rate near the average for the group.