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Sensitivity and Specificity by Indication for Examination for 363,048 Diagnostic 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:
Work-Up of Abnormal Screening Examination Short-Interval Follow-Up Evaluation of Breast Problem/No lump or Lump Unknown Evaluation of Breast Problem/Palpable Lump All Diagnostic Examinations
Sensitivity* 88.9% 61.4% 77.9% 89.0% 84.4%
True positives 5,075 617 2,113 2,816 10,621
Cancers 5,707 1,005 2,713 3,164 12,589
Specificity 87.7% 96.0% 94.4% 87.5% 91.3%
True negatives|| 116,403 66,593 98,876 38,223 320,095
Non-Cancers# 132,654 69,340 104,776 43,689 350,459

Notes

Numbers are frequencies unless otherwise indicated.

The first non-zero assessment within 90 days was used as the final assessment for analysis.

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

True Positive = the number of cancers that had an abnormal final interpretation (BI-RADS category 4 or 5; Note: 0 or 3 with a recommendation for biopsy was recoded as 4).

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 final interpretation (BI-RADS category 1, 2, or 3; Note: 0 with no recommendation for biopsy nor additional imaging/workup was recoded as 3, while 3 with a recommendation for biopsy was recoded as 4).

|| True Negative = the number of non-cancers that had a negative final interpretation (BI-RADS category 1, 2, or 3; Note: 0 with no recommendation for biopsy nor additional imaging/workup was recoded as 3, while 3 with a recommendation for biopsy was recoded as 4).

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

Table numbers last updated Sept 30, 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/diagnostic/2009/tableSensSpec.html

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