Table 1.
Characteristics of Women Undergoing Breast Cancer Screening
| All patients, N (%) | Patients attending a facility with on-site MRI, N (%) | Patients not attending a facility with on-site MRI, N (%) | ||
|---|---|---|---|---|
| Woman characteristics | Category | Total, n = 422,406 | Total, n = 188,069 | Total, n = 234,337 |
| Age (years) | <40 | 5947 (1.4) | 3286 (1.7) | 2661 (1.1) |
| 40–49 | 101,633 (24.1) | 46,862 (24.9) | 54,771 (23.4) | |
| 50–74 | 273,948 (64.9) | 119,964 (63.8) | 153,984 (65.7) | |
| >74 | 40,878 (9.7) | 17,957 (9.5) | 22,921 (9.8) | |
| Race/ethnicity | White | 269,971 (63.9) | 129,505 (68.9) | 140,466 (59.9) |
| Black | 47,561 (11.3) | 18,676 (9.9) | 28,885 (12.3) | |
| Asian | 49,123 (11.6) | 22,521 (12.0) | 26,602 (11.4) | |
| Hispanic | 26,293 (6.2) | 10,066 (5.4) | 16,227 (6.9) | |
| Other | 9164 (2.2) | 4371 (2.3) | 4793 (2.0) | |
| Unknown | 20,294 (4.8) | 2929 (1.6) | 17,365 (7.4) | |
| Family history | No | 333,425 (78.9) | 148,151 (78.8) | 185,274 (79.1) |
| Yes | 69,909 (16.6) | 31,837 (16.9) | 38,072 (16.2) | |
| Unknown | 19,072 (4.5) | 8081 (4.3) | 10,991 (4.7) | |
| Prior breast biopsy | No | 321,368 (76.1) | 139,630 (74.2) | 181,738 (77.6) |
| Yes | 97,840 (23.2) | 47,273 (25.1) | 50,567 (21.6) | |
| Unknown | 3198 (0.8) | 1166 (0.6) | 2032 (0.9) | |
| Low household income | No | 357,649 (84.7) | 155,221 (82.5) | 202,428 (86.4) |
| Yes | 30,082 (7.1) | 12,199 (6.5) | 17,883 (7.6) | |
| Unknown | 34,675 (8.2) | 20,649 (11.0) | 14,026 (6.0) | |
| Education level | Less than high school | 19,535 (4.6) | 8280 (4.4) | 11,255 (4.8) |
| High school | 50,402 (11.9) | 20,993 (11.2) | 29,409 (12.5) | |
| Some college | 67,143 (15.9) | 29,122 (15.5) | 38,021 (16.2) | |
| Greater than or equal to college | 131,587 (31.2) | 61,197 (32.5) | 70,390 (30.0) | |
| Unknown | 153,739 (36.4) | 68,477 (36.4) | 85,262 (36.4) | |
| Travel time to facility | <15 minutes | 34,577 (8.2) | 10,452 (5.6) | 24,125 (10.3) |
| 15–30 minutes | 209,781 (49.7) | 104,310 (55.5) | 105,471 (45.0) | |
| 30–60 minutes | 80,017 (18.9) | 36,301 (19.3) | 43,716 (18.7) | |
| >60 minutes | 98,031 (23.2) | 37,006 (19.7) | 61,025 (26.0) | |
| High lifetime risk | No | 411,111 (97.3) | 182,880 (97.2) | 228,231 (97.4) |
| Yes | 5468 (1.3) | 2403 (1.3) | 3065 (1.3) | |
| Unknown | 5827 (1.4) | 2786 (1.5) | 3041 (1.3) |
MRI, magnetic resonance imaging.