Table 1.

Conditional probability of marker status given carrier status

Marker status				Marker status given carrier status
ER	CK14	CK5/6	PR	BRCA1	Non-BRCA1
+	.	.	.	0.1	0.65
-	+	+	.	0.438	0.016
-	+	-	.	0.124	0.048
-	-	+	.	0.134	0.024
-	-	-	.	0.209	0.24
.	.	.	+	0.21	0.63

Estimates obtained from Lakhani and colleagues [1]. Plus signs (+) denote positive; hyphens (-) denote negative; periods (.) denote missing.