Table 2:

The iBreastExam and clinical breast examination sensitivity, specificity, NPV, and PPV

	True positive	False negative	True negative	False positive	Sensitivity (95% CI)	Specificity (95% CI)	NPV (95% CI)	PPV (95%CI)
Any breast finding
The iBreastExam	147	86	110	76	63% (57–69)	59% (52–66)	56% (49–63)	66% (59–72)
Clinical breast examination	71	162	175	11	31% (25–37)	94% (90–97)	52% (46–57)	87% (77–93)
p value	··	··	··	··	<0·0001	<0·0001	0·080	<0·0001
Suspicious breast finding
The iBreastExam	31	5	191	192	86% (70–95)	50% (45–55)	98% (94–99)	14% (10–19)
Clinical breast examination	30	6	331	52	83% (67–94)	86% (83–90)	98% (96–99)	37% (26–48)
p value	··	··	··	··	0·65	<0·0001	0·42	0·0020

Findings were determined by breast imaging (n=419). NPV=negative predictive value. PPV=positive predictive value.