Table 1.

Screening outcome at single reading vs. blinded double reading

	Single reading	Blinded double reading	P-value
Recalls, no (recall rate)	2928 (3.0)	3540 (3.6)	<0.001
Screen-detected cancers, no (CDR)	616 (6.2)	698 (7.0)	<0.001
False positives, no (FPR)	2312 (23.4)	2842 (28.7)	<0.001
Positive predictive value of recall, %	21.0	19.7	0.20
Positive predictive value of biopsy, %	52.1	50.9	0.56

CDR cancer detection rate (number of cancers detected per 1000 screens), FPR false positive rate (number of false positive recalls per 1,000 screens)