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Benchmarks for Abnormal Screening Mammography Interpretations 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
Recall rate (RR) 9.90%
Readers with 1000+ examinations 323
Abnormal initial interpretations 182,259
All examinations 1,837,422
RR (Median - 50th percentile) 9.5
RR (25th, 75th percentiles) 6.7, 12.4
RR (10th, 90th percentiles) 4.6, 15.7
PPV1§ 4.30%
Readers with 100+ abnormal interpretations 312
Cancers 7,887
Abnormal initial interpretations 182,545
PPV1 (Median - 50th percentile) 4.4
PPV1 (25th, 75th percentiles) 3.0, 5.8
PPV1 (10th, 90th percentiles) 2.1, 7.6
PPV2|| 23.60%
Readers with 30+ biopsy recommended 210
Cancers 5,775
Abnormal final interpretations 24,447
PPV2 (Median - 50th percentile) 25.6
PPV2 (25th, 75th percentiles) 18.0, 32.8
PPV2 (10th, 90th percentiles) 13.5, 38.6
PPV3# 26.70%
Readers with 30+ biopsy performed 171
Cancers 4,970
Abnormal final interpretations, with known biopsy 18,603
PPV3 (Median - 50th percentile) 29.8
PPV3 (25th, 75th percentiles) 22.0, 37.5
PPV3 (10th, 90th percentiles) 17.1, 46.7

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.

* Includes examinations for radiologists with minimum numbers of cases in a given row as designated; excludes examinations for which the radiologist is unknown.

Recall rate = the percentage of examinations with an abnormal initial interpretation (BI-RADS category 0, 4, or 5; Note: 3 with a recommendation for immediate follow-up was recoded as 0.)

§ PPV1 = The percentage of examinations with an abnormal initial interpretation that result in a tissue diagnosis of cancer within 1 year.

|| PPV2 = The percentage of examinations with an abnormal final interpretation** that result in a tissue diagnosis of cancer within 1 year.

# PPV3 = the percentage of examinations with an abnormal final interpretation**, where it is known that a biopsy was performed as a result of the abnormal diagnostic examination, that result in a tissue diagnosis of cancer within 1 year.

**Abnormal final interpretation (BI-RADS category 4 or 5: Note: 0 or 3 with a recommendation for biopsy was recoded as 4).

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/table5.html .

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