Table 1.
Patient Characteristics for Mammography Examinations from the BCSC, by Total and Stratified by USPSTF Period
| Patient characteristics | Pre-USPSTF 2009, N (%) | Post-USPSTF 2009, N (%) | Total, N (%) |
|---|---|---|---|
| Total | 458,325 (55.8) | 362,727 (44.2) | 821,052 (100.0) |
| Age, Years | |||
| 40–49 | 121,912 (26.6) | 88,233 (24.3) | 210,145 (25.6) |
| 50–59 | 170,075 (37.1) | 131,421 (36.2) | 301,496 (36.7) |
| 60–69 | 126,225 (27.5) | 112,271 (31.0) | 238,496 (29.0) |
| 70–74 | 40,113 (8.8) | 30,802 (8.5) | 70,915 (8.6) |
| Race | |||
| White, non-Hispanic | 370,063 (80.7) | 278,442 (76.8) | 648,505 (79.0) |
| Black, non-Hispanic | 20,933 (4.6) | 13,993 (3.9) | 34,926 (4.3) |
| Asian/Pacific Islander | 40,230 (8.8) | 45,614 (12.6) | 85,844 (10.5) |
| American Indian | 1,042 (0.2) | 770 (0.2) | 1,812 (0.2) |
| Hispanic | 16,664 (3.6) | 15,820 (4.4) | 32,484 (4.0) |
| Mixed, other | 9,393 (2.0) | 8,088 (2.2) | 17,481 (2.1) |
| Education | |||
| <High school graduate | 25,873 (5.6) | 18,283 (5.0) | 44,156 (5.4) |
| High school graduate | 95,527 (20.8) | 63,858 (17.6) | 159,385 (19.4) |
| Some college | 119,208 (26.0) | 90,298 (24.9) | 209,506 (25.5) |
| College degree | 217,717 (47.5) | 190,288 (52.5) | 408,005 (49.7) |
| Census block median annual income, in quartilesa | |||
| ≤$60,702 | 123,289 (26.9) | 76,717 (21.2) | 200,006 (24.4) |
| $60,703–75,632 | 114,215 (24.9) | 89,259 (24.6) | 203,474 (24.8) |
| $75,633–95,681 | 115,443 (25.2) | 94,877 (26.2) | 210,320 (25.6) |
| ≥$95,682 | 105,378 (23.0) | 101,874 (28.1) | 207,252 (25.2) |
| Residence | |||
| Urban | 281,249 (61.4) | 251,909 (69.4) | 533,158 (64.9) |
| Travel time to nearest facility, minutes | |||
| ≤10 | 205,773 (44.9) | 172,491 (47.6) | 378,264 (46.1) |
| 11–20 | 121,742 (26.6) | 95,267 (26.3) | 217,009 (26.4) |
| 21–30 | 67,408 (14.7) | 50,492 (13.9) | 117,900 (14.4) |
| ≥31 | 63,402 (13.8) | 44,477 (12.3) | 107,879 (13.1) |
| Breast health | |||
| Year of mammogram | |||
| 2006 | 33,020 (7.2) | N/A | 33,020 (4.0) |
| 2007 | 143,059 (31.2) | N/A | 143,059 (17.4) |
| 2008 | 148,165 (32.3) | N/A | 148,165 (18.0) |
| 2009 | 134,081 (29.3) | 12,129 (3.3) | 146,210 (17.8) |
| 2010 | N/A | 128,288 (35.4) | 128,288 (15.6) |
| 2011 | N/A | 113,650 (31.3) | 113,650 (13.8) |
| 2012 | N/A | 108,660 (30.0) | 108,660 (13.2) |
| BI-RADS breast density | |||
| Almost entirely fatty | 49,512 (10.8) | 47,316 (13.0) | 96,828 (11.8) |
| Scattered fibroglandular | 191,721 (41.8) | 149,569 (41.2) | 341,290 (41.6) |
| Heterogeneously dense | 175,941 (38.4) | 132,830 (36.6) | 308,771 (37.6) |
| Extremely dense | 41,151 (9.0) | 33,012 (9.1) | 74,163 (9.0) |
| Current use of hormone therapy | |||
| Yes | 42,291 (9.2) | 27,620 (7.6) | 69,911 (8.5) |
| First-degree relative with breast cancer | |||
| Yes | 78,006 (17.0) | 67,521 (18.6) | 145,527 (17.7) |
| Prior biopsy procedure | |||
| None | 356,799 (77.8) | 280,800 (77.4) | 637,599 (77.7) |
| Biopsy only | 66,076 (14.4) | 50,945 (14.0) | 117,021 (14.3) |
| Aspiration only | 8,574 (1.9) | 6,563 (1.8) | 15,137 (1.8) |
| Biopsy and aspiration | 26,876 (5.9) | 24,419 (6.7) | 51,295 (6.2) |
| BCSC 5-year breast cancer risk, (%) | |||
| <1.00 | 139,855 (30.5) | 112,683 (31.1) | 252,538 (30.8) |
| 1.00–1.66 | 133,339 (29.1) | 104,747 (28.9) | 238,086 (29.0) |
| 1.67–2.49 | 114,113 (24.9) | 87,410 (24.1) | 201,523 (24.5) |
| ≥2.50 | 71,018 (15.5) | 57,887 (16.0) | 128,905 (15.7) |
a
Census block level.
BI-RADS, Breast Imaging Reporting and Data System; BCSC, Breast Cancer Surveillance Consortium; USPSTF, U.S. Preventive Services Task Force.