Key Data from 1996-2019 at THE 6 active BCSC sites
|Number of Records|
|Women with Breast Cancer||182,395|
|Breast Imaging Exams||13,292,173|
|Facilities where Mammograms Were Read||304|
Summary of Selected Variables
FROM data collected at breast imaging exam
|Age at Exam||Number of Exams||Percent|
Note: Age data is missing for 73,016 records. These records have been excluded from the table.
|Race/ethnicity||Number of Exams||Percent|
|Native Hawaiian or Pacific Islander||8,360||0.1%|
|American Indian or Alaska Native||39,788||0.3%|
|Mixed (2+ races reported)||111,497||0.9%|
Note: All categories are non-Hispanic except the Hispanic category.
Note: Race data is missing for 859,175 records (6.5%). Missingness is due primarily to women choosing not to self-report race and certain facilities not collecting race information. Missing values have been excluded from the table.
|Postmenopausal at Exam||Number of Exams||Percent|
Note: Menopausal status is missing for 1,055,959 records (7.9%). Missingness is due primarily to women choosing not to self-report and certain facilities not collecting menopausal status information. Missing values have been excluded from the table.
|BMI (kg/m2)||Number of Exams||Percent|
|18.5 or less (Underweight)||120,333||1.6%|
|18.5 - 24.9 (Normal)||2,971,743||40.3%|
|25.0 - 29.9 (Overweight)||2,187,995||29.7%|
|30.0 - 34.9 (Obese I)||1,194,013||16.2%|
|35.0 - 39.9 (Obese II)||530,152||7.2%|
|40 or greater (Obese III)||363,712||4.9%|
Note: BMI is missing for 5,924,225 records. Missingness is due primarily to women choosing not to self-report and certain facilities not collecting BMI information. Missing values have been excluded from the table.
|Breast Density at Exam, BI-RADS||Number of Exams||Percent|
|1 (a): Almost entirely fat||962,213||8.3%|
|2 (b): Scattered fibroglandular tissue||5,016,975||43.2%|
|3 (c): Heterogeneously dense||4,672,047||40.2%|
|4 (d): Extremely dense||976,553||8.4%|
Note: Breast density is missing for 1,664,385 records. Missingness is due primarily to certain facilities not collecting density information in some years. Missing values have been excluded from the table.
|First Degree Family History of Breast Cancer at Exam||Number of Exams||Percent|
Note: Family History is missing for 1,336,590 records (10.1%). Missingness is due primarily to women choosing not to self-report and certain facilities not collecting family history information. Missing values have been excluded from the table.
The following must be cited when reproducing this data:
"The Breast Cancer Surveillance Consortium and its data collection and sharing activities are funded by grants from the National Cancer Institute (P01CA154292, U54CA163303), Patient-Centered Outcomes Research Institute (PCS-1504-30370), and Agency for Health Research and Quality (R01 HS018366-01A1). Downloaded xx/xx/xxxx from the Breast Cancer Surveillance Consortium Web site - http://www.bcsc-research.org/. More information regarding the BCSC is available at: http://bcsc-research.org/."