Table 3. Comparison of Lesion Detection Difficulty Metrics and Lesion Characteristics for the Test Set.

Metric	Mean (SD)
	Lesion diagnosis		Lesion type
	Benign	Cancer	Mass	Architectural distortion
Total count, No.	70	66	121	15
No. of algorithms that detected lesion within 4 FPs per volume	7.47 (1.73)	7.82 (1.76)	7.63 (1.78)	7.73 (1.44)
FPs corresponding to correct prediction considering teams that detected it within 4 FPs per volume	0.77 (0.49)	0.55 (0.43)	0.64 (0.47)	0.91 (0.47)

Abbreviation: FP, false positive.