Key Data from 1996-2016 at THE 6 active BCSC sites
|Number of Records|
|Women with Breast Cancer||156,757|
|Breast Imaging Exams||11,967,811|
|Facilities where Mammograms Were Read||291|
Summary of Selected Variables
FROM data collected at breast imaging exam
|Age at Exam||Number of Exams||Percent|
Note: Age data is missing for 275 records. These records have been excluded from the table.
|Race/ethnicity||Number of Exams||Percent|
|Native Hawaiian or Pacific Islander||6,920||0.1%|
|American Indian or Alaska Native||35,220||0.3%|
|Mixed (2+ races reported)||101,643||0.9%|
Note: All categories are non-Hispanic except the Hispanic category.
Note: Race data is missing for 840,280 records (7.0%). 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 748,129 records (6.3%). 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)||108,878||1.7%|
|18.5 - 24.9 (Normal)||2,682,341||40.7%|
|25.0 - 29.9 (Overweight)||1,957,317||29.7%|
|30.0 - 34.9 (Obese I)||1,057,853||16.1%|
|35.0 - 39.9 (Obese II)||464,665||7.1%|
|40 or greater (Obese III)||314,138||4.8%|
Note: BMI is missing for 5,382,619 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||836,524||8.1%|
|2 (b): Scattered fibroglandular tissue||4,470,054||43.1%|
|3 (c): Heterogeneously dense||4,192,867||40.4%|
|4 (d): Extremely dense||877,865||8.5%|
Note: Breast density is missing for 1,590,501 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 976,111 records (8.2%). 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/."