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 1,838,372 Screening Mammography Examinations from 2004 to 2008 by Time (Months) Since Previous Mammography -- based on BCSC data through 2009

You are viewing the 2009 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 1,838,372 9,022 4.91 4.14
9-15 months 1,001,975 4,270 4.26 3.41
16-20 months 238,829 1,104 4.62 3.93
21-27 months 250,569 1,378 5.50 4.86
28+ months 266,856 1,840 6.90 6.23
No previous mammography 80,143 430 5.37 4.77

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 initial interpretation (BI-RADS category 0, 4, or 5; Note: 3 with a recommendation for immediate follow-up was recoded as 0) among 1,000 screening mammography examinations.

Table numbers last updated September 23, 2013. The following source must be cited when reproducing this table: NCI-funded Breast Cancer Surveillance Consortium (HHSN261201100031C). Downloaded from the Breast Cancer Surveillance Consortium Web site - http://breastscreening.cancer.gov/.

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