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Cancer Rate (per 1,000 examinations) and Cancer Detection Rate (per 1,000 examinations) for 255,680 Diagnostic Mammography Examinations from 1996 to 2005 by Age

  Number of diagnostic mammography examinations1 Number of cancers2 Cancer rate (per 1,000 examinations)3 Cancer detection rate (per 1,000 examinations)4
Total 255,680 10,264 40.14 32.45
Age 40-44 44,818 1,092 24.36 19.25
Age 45-49 48,121 1,523 31.64 25.22
Age 50-54 42,142 1,484 35.21 27.43
Age 55-59 32,087 1,281 39.92 32.25
Age 60-64 24,714 1,069 43.25 33.90
Age 65-69 21,104 1,028 48.71 38.94
Age 70-74 18,157 1,001 55.13 46.31
Age 75-89 24,537 1,786 72.78 62.27

1 Diagnostic mammography examination: Mammography examinations indicated by the radiologist to be for evaluation of a breast problem.

2 Cancers = The number of examinations with a tissue diagnosis of ductal carcinoma in situ or invasive cancer within 30 days prior to or 1 year following the examination.

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

4 Cancer detection rate (per 1,000 examinations) = The number of cancers among 1,000 diagnostic mammography examinations with a positive interpretation (BI-RADS category 0 or 3 with a recommendation for biopsy, 4, or 5).

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Last modified: 20 Nov 2008
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