Table 3.
Proportion of women not using their closest facility and for the subset not using the closes facility, differential travel time to screening breast imaging exams recorded in the Breast Cancer Surveillance Consortium from 2005-2012 (N=825,370).
| Mammography (N=821,683) | MRI (N=3,687) | |||
|---|---|---|---|---|
|
| ||||
| Not using closest* facility (%) | Differential travel time (min.); median (IQR) ** | Not using closest* facility (%) | Differential travel time (min.); median (IQR) ** | |
| All exams | 23.4 | 14 (8,25) | 48.1 | 20 (11,40) |
| Age (years) | ||||
| <40 | 29.6 | 15 (9,25) | 42.6 | 22 (13,38) |
| 40-49 | 25.8 | 14 (8,24) | 50.1 | 20 (11,40) |
| 50-59 | 24.7 | 14 (8,25) | 49.8 | 19 (11,39) |
| 60-69 | 22.7 | 14 (8,25) | 49.1 | 20 (11,41) |
| 70-79 | 18.9 | 13 (7,25) | 43.8 | 16 (10,45) |
| 80+ | 14.9 | 12 (7,23) | 15.4 | 8 (8,9) |
| Race | ||||
| Non-Hispanic white | 22.0 | 15 (9,26) | 47.5 | 22 (12,45) |
| Non-Hispanic black | 27.0 | 18 (10,31) | 64.9 | 25 (14,43) |
| Hispanic | 32.5 | 9 (6,14) | 46.9 | 13 (8,22) |
| Non-Hispanic Asian | 23.7 | 12 (7,22) | 50.0 | 12 (6,23) |
| Non-Hispanic Other | 24.7 | 13 (8,22) | 53.3 | 17 (7,27) |
| Education | ||||
| < HS grad | 19.2 | 10 (7,20) | 41.3 | 12 (8,46) |
| HS grad or GED | 19.8 | 15 (9,26) | 51.2 | 35 (19,56) |
| Some College | 23.8 | 15 (9,25) | 51.3 | 22 (11,45) |
| College grad/post grad | 24.8 | 14 (8,23) | 46.4 | 17 (10,35) |
| Rural/Urban by ZIP Code | ||||
| Large Rural town | 23.2 | 25 (13,35) | 51.9 | 34 (23,58) |
| Small town/Isolated rural | 23.1 | 23 (13,38) | 75.9 | 41 (23,67) |
| Suburban | 28.3 | 15 (9,24) | 57.9 | 20 (18,30) |
| Urban Core | 22.9 | 11 (7,17) | 39.5 | 14 (8,20) |
| BCSC 5 year risk score | ||||
| High Risk (>1.67) | 21.1 | 16 (9,27) | 49.1 | 20 (11,46) |
| Average Risk (<1.67) | 24.3 | 14 (8,25) | 41.6 | 20 (11,43) |
| Breast screening history | ||||
| Screened in past 30 months | 22.9 | 14 (8,25) | 47.3 | 19 (11,39) |
| Not screened in past 30 months | 23.5 | 13 (8,23) | 50.4 | 24 (13,48) |
| Family history | ||||
| Positive | 22.5 | 15 (8,25) | 45.6 | 20 (11,43) |
| Negative | 23.4 | 14 (8,25) | 50.0 | 19 (10,40) |
| Breast density | ||||
| Almost entirely fatty | 21.8 | 15 (8,25) | 45.7 | 22 (15,46) |
| Scattered fibroglandular | 22.6 | 16 (9,28) | 46.7 | 24 (14,46) |
| Heterogeneously dense | 24.4 | 15 (8,26) | 47.3 | 22 (12,43) |
| Extremely dense | 26.1 | 13 (7,22) | 48.5 | 18 (10,38) |
| History of breast procedure | ||||
| None | 23.1 | 13 (8,23) | 46.5 | 17 (9,33) |
| Biopsy only | 23.6 | 15 (8,26) | 49.6 | 19 (11,39) |
| Aspiration only | 27.3 | 15 (8,26) | 58.8 | 15 (7,21) |
| Both biopsy and aspiration | 21.1 | 17 (10,27) | 46.2 | 23 (13,46) |
*
Closest defined a s any facility within 5 minutes of geographical closest facility
**
Median and interquartile range (IQR) of differential travel time for subjects not using the c losest facility.