Table 1
Sensitivity and specificity data used to calibrate model, by screening frequency, breast density and age at exam Table 1
Sensitivity and specificity data used to calibrate model, by screening frequency, breast density and age at exam

Table 1
Sensitivity and specificity data used to calibrate model, by screening frequency, breast density and age at exam
Table summary
This table displays the results of Sensitivity and specificity data used to calibrate model. The information is grouped by Screening frequency and breast density (appearing as row headers), Age at exam, 40 to 49, 50 to 59, 60 to 69 and 70 to 79 (appearing as column headers).
Screening frequency and breast density	Age at exam
	40 to 49		50 to 59		60 to 69		70 to 79
	Sensitivity	Specificity	Sensitivity	Specificity	Sensitivity	Specificity	Sensitivity	Specificity
Initial screen
Extremely dense	0.81	0.82	0.89	0.84	0.91	0.85	0.92	0.87
Heterogeneously dense	0.9	0.78	0.88	0.8	0.91	0.82	0.93	0.83
Scattered	0.92	0.83	0.93	0.84	0.95	0.86	0.96	0.87
Mainly fatty	0.94	0.9	0.86	0.91	0.89	0.92	0.91	0.93
Recurring annual screen
Extremely dense	0.65	0.9	0.78	0.91	0.81	0.92	0.85	0.93
Heterogeneously dense	0.79	0.87	0.78	0.88	0.81	0.89	0.85	0.91
Scattered	0.85	0.9	0.85	0.91	0.88	0.92	0.91	0.93
Mainly fatty	0.85	0.95	0.73	0.95	0.77	0.96	0.81	0.96
Recurring biennial screen
Extremely dense	0.73	0.88	0.83	0.9	0.86	0.91	0.89	0.92
Heterogeneously dense	0.84	0.85	0.83	0.87	0.86	0.88	0.89	0.89
Scattered	0.88	0.89	0.89	0.9	0.91	0.91	0.92	0.92
Mainly fatty	0.89	0.94	0.8	0.94	0.83	0.95	0.87	0.95
Recurring triennial screen
Extremely dense	0.82	0.88	0.85	0.89	0.88	0.9	0.91	0.91
Heterogeneously dense	0.81	0.84	0.84	0.86	0.87	0.87	0.9	0.88
Scattered	0.88	0.88	0.9	0.89	0.92	0.9	0.93	0.91
Mainly fatty	0.78	0.93	0.81	0.94	0.84	0.95	0.87	0.95
Note: Values interpolated from data published by Screening Mammography Program of British Columbia^{Note 6} and Breast Cancer Screening Consortium.^{Note 5}

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