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Performance Measures for 255,680 Diagnostic Mammography Examinations1 from 1996 to 2005 by Time (Months) Since Previous Mammography
1 Diagnostic mammography examination: Mammography examinations indicated by the radiologist to be for evaluation of a breast problem. 2 PPV2 (Positive Predictive Value 2) = The percentage of examinations with a positive interpretation& that result in a tissue diagnosis of cancer§. 3 Abnormal interpretation = The percentage of examinations with a positive interpretation&. § Cancers = Examinations with a tissue diagnosis of ductal carcinoma in situ or invasive cancer within 30 days prior to or 1 year following the examination. Non-cancers = Examinations without a tissue diagnosis of ductal carcinoma in situ or invasive cancer within 30 days prior to or 1 year following the examination. & Positive interpretation = BI-RADS category 0 or 3 with a recommendation for biopsy, 4, or 5. Negative interpretation = BI-RADS category 1, 2, 0 with no recommendation for biopsy nor additional imaging/work-up, or 3 with no recommendation for biopsy. |
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