Performance Measures by Age & Time Since Previous Mammography

	Sensitivity²	Specificity³	PPV⁴	Recall⁵
Age 40-44	70.8%	89.8%	1.5%	10.3%
9-15 months	63.5%	90.6%	1.4%	9.4%
16-20 months	68.3%	90.4%	1.4%	9.6%
21-27 months	71.6%	90.5%	1.6%	9.6%
28+ months	74.6%	89.3%	1.7%	10.8%
No previous mammography	80.2%	87.5%	1.5%	12.5%
Age 45-49	74.3%	89.8%	2.3%	10.3%
9-15 months	69.8%	90.5%	2.1%	9.6%
16-20 months	71.5%	90.4%	2.3%	9.7%
21-27 months	75.6%	90.1%	2.5%	10.0%
28+ months	78.9%	88.8%	2.6%	11.4%
No previous mammography	86.0%	85.1%	2.5%	15.2%
Age 50-54	78.4%	90.9%	3.3%	9.2%
9-15 months	73.5%	91.6%	3.1%	8.5%
16-20 months	74.1%	91.5%	3.1%	8.6%
21-27 months	85.1%	90.6%	3.3%	9.6%
28+ months	86.0%	89.4%	4.2%	11.0%
No previous mammography	89.2%	85.0%	3.2%	15.3%
Age 55-59	81.6%	91.5%	4.6%	8.8%
9-15 months	79.1%	92.1%	4.2%	8.1%
16-20 months	77.7%	91.7%	4.9%	8.6%
21-27 months	83.1%	90.6%	4.7%	9.7%
28+ months	89.4%	90.0%	5.2%	10.4%
No previous mammography	93.5%	85.8%	6.2%	14.9%
Age 60-64	80.0%	91.9%	5.4%	8.4%
9-15 months	75.8%	92.4%	4.8%	7.8%
16-20 months	80.5%	92.1%	5.4%	8.2%
21-27 months	82.9%	91.3%	5.9%	9.1%
28+ months	87.9%	91.0%	7.5%	9.6%
No previous mammography	89.7%	87.2%	6.8%	13.5%
Age 65-69	82.5%	92.4%	6.3%	8.0%
9-15 months	78.0%	92.9%	5.3%	7.4%
16-20 months	85.6%	92.5%	6.7%	7.9%
21-27 months	84.4%	92.1%	7.3%	8.4%
28+ months	89.4%	91.3%	8.2%	9.3%
No previous mammography	90.3%	87.3%	8.9%	13.6%
Age 70-74	82.9%	93.1%	7.9%	7.3%
9-15 months	79.3%	93.6%	7.1%	6.7%
16-20 months	82.1%	93.3%	8.0%	7.1%
21-27 months	88.2%	92.3%	8.2%	8.2%
28+ months	88.2%	92.1%	9.7%	8.6%
No previous mammography	87.7%	88.2%	11.8%	13.1%
Age 75-89	84.5%	93.6%	9.8%	6.9%
9-15 months	80.4%	94.1%	8.0%	6.3%
16-20 months	83.0%	94.0%	9.2%	6.5%
21-27 months	87.1%	92.8%	10.5%	7.8%
28+ months	88.9%	92.8%	12.8%	8.0%
No previous mammography	93.0%	89.0%	18.1%	13.0%

¹ Screening mammography examinations: Mammography examinations indicated by the radiogist to be for screening with bilateral views done and no other mammogram within the past 9 months among women without breast implants or a prior breast cancer diagnosis.

² Sensitivity = The percentage of cancers^§ that had a positive interpretation^&.

³ Specificity = The percentage of non-cancers^~ that had a negative interpretation^#.

⁴ PPV (Positive Predictive Value) = The percentage of examinations with a positive interpretation^& that result in a tissue diagnosis of cancer^§.

^§ Cancers = Examinations with a tissue diagnosis of ductal carcinoma in situ or invasive cancer within one year and before the next screening mammography examination.

^~ Non-cancers = Examinations without a tissue diagnosis of cancer within one year or before the next screening examination, whichever occurs earlier.

^& Positive interpretation = BI-RADS category 0, 3 with a recommendation for immediate follow-up, 4, or 5.

^# Negative interpretation = BI-RADS category 1, 2, or 3 with no recommendation for immediate follow-up.




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Performance Measures for 3,603,832 Screening Mammography Examinations1 from 1996 to 2006 by Age & Time (Months) Since Previous Mammography

Performance Measures for 3,603,832 Screening Mammography Examinations¹ from 1996 to 2006 by Age & Time (Months) Since Previous Mammography