Performance Measures for 3,884,059 Screening Mammography Examinations¹ from 1996 to 2006 by Age --- based on BCSC data as of 2008

¹ Screening mammography examinations: 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 Sensitivity = The percentage of cancers^§ that had a positive interpretation^&.

³ Specificity = The percentage of non-cancers^~ that had a negative interpretation^#.

⁴ PPV (Positive Predictive Value) = The percentage of examinations with a positive interpretation^& that result in a tissue diagnosis of cancer^§.

⁵ Recall = The percentage of examinations with a positive interpretation^&.

^§ Cancers = Examinations with a tissue diagnosis of ductal carcinoma in situ or invasive cancer within one year and before the next screening mammography examination.

^~ Non-cancers = Examinations without a tissue diagnosis of cancer within one year or before the next screening examination, whichever occurs earlier.

^& Positive interpretation = BI-RADS category 4, 5, or 0 --- 3 with a recommendation for immediate follow-up were recoded as 0.

^# Negative interpretation = BI-RADS category 1, 2, or 3 with no recommendation for immediate follow-up.

^* Table numbers last updated March 31, 2009. The following source must be cited when reproducing this table: NCI-funded Breast Cancer Surveillance Consortium co-operative agreement (U01CA63740, U01CA86076, U01CA86082, U01CA63736, U01CA70013, U01CA69976, U01CA63731, U01CA70040). Downloaded xx/xx/xxxx from the Breast Cancer Surveillance Consortium Web site - http://breastscreening.cancer.gov/data/performance/screening/2008/perf_age.html .

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