Performance Measures by Age & Time Since Previous Mammography

	PPV2²	Abnormal Interpretation³
Age 40-44	22.5%	8.8%
<=15 months	18.8%	7.8%
16-20 months	18.7%	7.0%
21-27 months	24.6%	8.1%
28+ months	23.7%	9.3%
No previous mammography	30.1%	13.8%
Age 45-49	29.3%	8.7%
<=15 months	24.4%	7.8%
16-20 months	26.9%	7.4%
21-27 months	30.2%	7.8%
28+ months	36.2%	10.6%
No previous mammography	41.7%	18.4%
Age 50-54	33.7%	8.4%
<=15 months	28.5%	7.8%
16-20 months	36.1%	7.2%
21-27 months	36.7%	7.7%
28+ months	47.1%	10.6%
No previous mammography	47.4%	20.5%
Age 55-59	41.1%	8.1%
<=15 months	34.8%	7.2%
16-20 months	42.1%	7.1%
21-27 months	48.4%	8.2%
28+ months	56.4%	11.8%
No previous mammography	60.5%	26.8%
Age 60-64	42.6%	8.0%
<=15 months	36.5%	7.0%
16-20 months	44.4%	6.9%
21-27 months	45.7%	7.8%
28+ months	59.6%	12.2%
No previous mammography	62.9%	26.5%
Age 65-69	46.8%	8.5%
<=15 months	40.3%	7.2%
16-20 months	38.4%	7.4%
21-27 months	53.3%	10.1%
28+ months	65.3%	14.0%
No previous mammography	67.0%	29.4%
Age 70-74	51.4%	9.2%
<=15 months	41.5%	7.5%
16-20 months	54.3%	7.3%
21-27 months	58.4%	9.8%
28+ months	70.1%	16.9%
No previous mammography	75.1%	34.0%
Age 75-89	56.3%	11.4%
<=15 months	45.2%	7.8%
16-20 months	56.0%	8.6%
21-27 months	59.5%	12.2%
28+ months	69.5%	22.0%
No previous mammography	68.1%	41.6%

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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Performance Measures for 273,601 Diagnostic Mammography Examinations1 from 1996 to 2007 by Age & Time (Months) Since Previous Mammography

Performance Measures for 273,601 Diagnostic Mammography Examinations¹ from 1996 to 2007 by Age & Time (Months) Since Previous Mammography