BCSC
Breast Cancer Surveillance Consortium: Working together to advance breast cancer research
 
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Cancer Rate (per 1,000 examinations) and Cancer Detection Rate (per 1,000 examinations) for 3,884,059 Screening Mammography Examinations 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:
Number of screening
mammography examinations1
Number of cancers2 Cancer rate
(per 1,000 examinations)3
Cancer detection rate
(per 1,000 examinations)4
Total 3,884,059 19,146 4.92 4.00
9-15 months 1,992,053 8,716 4.37 3.36
16-20 months 521,545 2,471 4.73 3.77
21-27 months 576,138 3,075 5.33 4.49
28+ months 616,566 3,722 6.03 5.25
No previous mammography 177,757 1,162 6.53 5.86

1 Screening mammography examination: 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 Cancers = The number of examinations with a tissue diagnosis of ductal carcinoma in situ or invasive cancer within 1 year following the examination and before the next screening mammography examination.

3 Cancer rate (per 1,000 examinations) = The number of cancers among 1,000 screening mammography examinations.

4 Cancer detection rate (per 1,000 examinations) = The number of cancers with a positive interpretation (BI-RADS category 4, 5, or 0 --- 3 with a recommendation for immediate follow-up were recoded as 0) among 1,000 screening mammography examinations.

* 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/rate_time.html .

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