Table 4.

Probability of biopsy diagnosis given Gail model risk estimate and breast EIS result^*

			Estimated outcome, %
	Known evidence		Biopsy category
Case frequency, %	EIS result	Gail cutoff'	Benign, no atypia	Infiltrating cancer or DCIS	Premalignant
74	Negative	Negative	91	3	7
16	Positive	Negative	65	9	26
7	Negative	Positive	53	27	19
3	Positive	Positive	18	45	37

*EIS indicates electrical impedance scanning; DCIS, ductal carcinoma in situ.