Performance Measures for 273,601 Diagnostic Mammography Examinations¹ from 1996 to 2007 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.

[Return to Diagnostic Performance]