BCSC
Breast Cancer Surveillance Consortium: Working together to advance breast cancer research
 
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Performance Measures for 3,884,059 Screening Mammography Examinations1 from 1996 to 2006 by Time (Months) Since Previous Mammography --- based on BCSC data as of 2008

You are viewing the 2008 collection of this data. Data from other times are also available:
Sensitivity2 Specificity3 PPV4 Recall5
Total 81.2% 91.2% 4.4% 9.0%
9-15 months 76.9% 92.2% 4.1% 8.0%
16-20 months 79.6% 91.8% 4.4% 8.5%
21-27 months 84.2% 91.1% 4.8% 9.2%
28+ months 87.1% 89.9% 5.0% 10.4%
No previous mammography 89.7% 84.0% 3.5% 16.4%

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 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§.

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

§ 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 4, 5, or 0 --- 3 with a recommendation for immediate follow-up were recoded as 0.

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

* Table numbers last updated March 31, 2009. The following source must be cited when reproducing this table: NCI-funded Breast Cancer Surveillance Consortium co-operative agreement (U01CA63740, U01CA86076, U01CA86082, U01CA63736, U01CA70013, U01CA69976, U01CA63731, U01CA70040). Downloaded xx/xx/xxxx from the Breast Cancer Surveillance Consortium Web site - http://breastscreening.cancer.gov/statistics/performance/screening/2008/perf_time.html .

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