BCSC Mammography Data

Mammograms by Race/Ethnicity, 1996-2016

Race/Ethnicity Percentage of Mammograms Percentage of US Women
White 73.2% 67.0%
Black 10.8% 12.2%
Asian or Pacific Islander 9.2% 5.2%
American Indian or Alaska Native 0.3% 0.7%
Other or Mixed (2+ races) 1.6% 1.3%
Hispanic 4.8% 13.7%

 

This table shows the racial/ethnic distribution of 11,220,288 mammograms recorded in 1996-2016 from the 6 active BCSC sites. The BCSC’s standardized questions for race and ethnicity were asked in a similar manner as on the US census in 2000 and 2010. 

The racial/ethnic distribution among 120.7 million US women age 18+ years in 2010 is shown for comparison. 

Note: All categories are non-Hispanic except the Hispanic category. 

Note: The numbers in the table at the left exclude N=781,937 mamograms with missing race. This large number of missing values reflects that some women prefer not to answer the question and some radiology facilities did not ask about race.

Number of Screening Mammograms per Woman, 1996-2016

SAS Output
Histogram showing the Number of Screening Mammograms per Woman 1 2 3 4 5 or more Screening mammograms 0% 10% 20% 30% 40% Percent

        

 

One strength of the BCSC is the ability to follow women longitudinally. This figure shows the number of screening mammograms per woman in the 6 active BCSC sites in 1996-2016. While approximately 28% of the women have only one screening mammogram in BCSC data, it should not be interpreted that these women had only one mammogram in twenty years. The woman may have had a mammogram at a facility that was not in the BCSC. For women with multiple exams in the BCSC, we can examine patterns and screening performance over time. 

Volume of Film, Digital, and 3D Mammograms in the BCSC by Year, 1996-2016

SAS Output
Type of mammogram by year 1996 2000 2004 2008 2012 2016 Year 0% 20% 40% 60% 80% 100% Percent Tomosynthesis Digital Film Type of mammogram

 

 

 

The BCSC data reflect the large changes over time in the types of mammograms used in U.S. community practice. Until the early 2000s almost all mammograms were film. Then digital mammograms became common, followed in recent years by the growth in 3D mammography (also known as tomosynthesis). Film mammography has all but disappeared.

Note: These graphs support special accessibility features in the Google Chrome browser. To use these features, please download the required Chrome browser extension here

Number of Film, Digital, and 3d Mammograms in the bcsc by year, 1996-2016

Associated with figure above.

Year Film Digital Tomosynthesis Mammogram,
NOS
Total
1996         200,101                                   1           200,102
1997         324,115                                 28           324,143
1998         420,520                                 34           420,554
1999         446,750                                 68           446,818
2000         473,737                        6                               87           473,830
2001         478,980                2,230                         7,852           489,062
2002         552,587             11,948                         4,170           568,705
2003         535,783             27,408                         3,576           566,767
2004         522,134             50,635                      14,245           587,014
2005         510,869             89,691                      45,853           646,413
2006         438,649           175,932                      35,155           649,736
2007         325,176           313,597                      10,509           649,282
2008         230,182           430,251                         2,155           662,588
2009         123,160           546,825                         2,439           672,424
2010            62,699           571,652                         1,370           635,721
2011            31,907           536,566                      2,638                          231           571,342
2012            12,146           537,257                    18,843                             80           568,326
2013              7,270           534,184                    39,289                       3,982           584,725
2014                  889           477,514                    73,540                          366           552,309
2015                  362           390,643                 112,627                       1,071           504,703
2016                  351           273,801                 155,466                          585           430,203
Total      5,698,367       4,970,140                 402,403                  133,857     11,204,767

 

Sensitivity and Specificity of Screening Digital Mammography by BI-RADS Density, Women 40-74 years, 2005-2010

 

N = 585,993 screening exams


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/."