BCSC
Breast Cancer Surveillance Consortium: Working together to advance breast cancer research
 
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Sensitivity and Specificity for 2,061,691 Screening Mammography Examinations from 2004 - 2008 -- based on BCSC data through 2009

You are viewing the 2009 collection of this data. Data from other times are also available:
  All Screening Examinations
Sensitivity* 84.9%
True positives 8,774
Cancers 10,331
Specificity§ 90.3%
True negatives|| 1,853,216
Non-Cancers# 2,051,360

Notes

Numbers are frequencies unless otherwise indicated.

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.

* Sensitivity = the percentage of cancers that had an abnormal initial interpretation (BI-RADS category 0, 4, 5; Note: 3 with a recommendation for immediate follow-up was recoded as 0).

True Positive = the number of cancers that had an abnormal initial interpretation.

Cancers = the number of examinations with a tissue diagnosis of cancer within 1 year following the examination.

§ Specificity = the percentage of non-cancers that had a negative initial interpretation (BI-RADS category 1, 2, or 3 with no recommendation for immediate follow-up).

|| True Negative = the number of non-cancers that had a negative initial interpretation.

# Non-cancers = the number of examinations without a tissue diagnosis of cancer within 1 year following the examination.

Table numbers last updated Sept 26, 2013 . The following source must be cited when reproducing this table: NCI-funded Breast Cancer Surveillance Consortium (HHSN261201100031C). Downloaded xx/xx/xxxx from the Breast Cancer Surveillance Consortium Web site - http://breastscreening.cancer.gov/statistics/benchmarks/screening/2009/tableSensSpec.html .

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