BCSC
Breast Cancer Surveillance Consortium: Working together to advance breast cancer research
 
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Performance Measures for 1,838,372 Screening Mammography Examinations1 from 2004 to 2008 by Time (Months) Since Previous Mammography -- based on BCSC data through 2009

You are viewing the 2009 collection of this data. Data from other times are also available:
  Sensitivity2 Specificity3 Recall4 PPV15 PPV26 PPV37
Total 84.4% 90.8% 9.6% 4.3% 25.0% 29.0%
9-15 months 80.0% 91.9% 8.4% 4.1% 25.3% 29.2%
16-20 months 85.1% 91.5% 8.8% 4.5% 25.5% 29.3%
21-27 months 88.4% 91.2% 9.2% 5.3% 31.6% 36.6%
28+ months 90.4% 88.7% 11.8% 5.3% 26.2% 30.9%
No previous mammography 88.8% 80.4% 20.0% 2.4% 12.5% 14.6%

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

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

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

4  Recall = The percentage of examinations with a positive initial interpretation&.

5  PPV1 = The percentage of examinations with a positive initial interpretation& that result in a tissue diagnosis of cancer§.

6  PPV2 = The percentage of examinations with a positive final interpretation^ that result in a tissue diagnosis of cancer§.

7  PPV3 = The percentage of examinations with a positive final interpretation^, where it is known that a biopsy was performed as a result of the positive interpretation, that result in a tissue diagnosis of cancer within one year.

§  Cancers = Examinations with a tissue diagnosis of ductal carcinoma insitu 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 initial interpretation = BI-RADS category 0, 4, or 5 (Note: 3 with a recommendation for immediate follow-up was recoded as 0).

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

^  Positive final interpretation = BI-RADS category 4 or 5 (Note: categories 0 and 3 with a recommendation for biopsy were recoded as category 4).

Table numbers last updated September 23, 2013. The following source must be cited when reproducing this table: NCI-funded Breast Cancer Surveillance Consortium (HHSN261201100031C). Downloaded from the Breast Cancer Surveillance Consortium Web site - http://breastscreening.cancer.gov/.

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