| Geographic level of variable | N | % | N missing |
---|---|---|---|---|
Total population | Â | 646,553 | Â | Â |
Woman-level characteristics | Â | Â | Â | Â |
Age | Woman level | Â | Â | 0 |
 30–40 |  | 35,483 | 5.5 |  |
 40–49 |  | 194,760 | 30.1 |  |
 50–59 |  | 181,832 | 28.1 |  |
 60–69 |  | 126,106 | 19.5 |  |
 70–79 |  | 75,192 | 11.6 |  |
 80+ |  | 33,180 | 5.1 |  |
Race/ethnicity | Woman level | Â | Â | 119,624 |
 White, non-Hispanic |  | 372,016 | 70.6 |  |
 Black, non-Hispanic |  | 38,949 | 7.4 |  |
 Hispanic |  | 27,315 | 5.2 |  |
 Asian |  | 75,278 | 14.3 |  |
 Native American |  | 3040 | 0.6 |  |
 Other |  | 10,331 | 2 |  |
Education | Woman level | Â | Â | 242,322 |
 Less than high school |  | 37,773 | 9.3 |  |
 High school |  | 83,888 | 20.8 |  |
 Some college |  | 100,696 | 24.9 |  |
 College or post-college graduate |  | 181,874 | 45 |  |
Census-levelb characteristics | Â | Â | Â | Â |
Rurality | Censusb: 2006 zip code | Â | Â | 238 |
 Urban core |  | 452,224 | 70 |  |
 Suburban areas |  | 41,888 | 6.5 |  |
 Large town areas |  | 93,165 | 14.4 |  |
 Small town and isolated rural |  | 59,038 | 9.1 |  |
Median household income | Censusb: Block group | Â | Â | 503 |
 <45K |  | 144,480 | 22.4 |  |
 45–59,999K |  | 139,912 | 21.7 |  |
 60–84,999K |  | 198,303 | 30.7 |  |
 85K+ |  | 163,355 | 25.3 |  |
Diversity index | Censusb: Tract | Â | Â | 503 |
 0–25 |  | 148,217 | 22.9 |  |
 26–50 |  | 158,971 | 24.6 |  |
 51–75 |  | 243,632 | 37.7 |  |
 76–100 |  | 95,230 | 14.7 |  |
Average spent on public transportation | Censusb: Block group | Â | 503 | Â |
 <100$ |  | 364,469 | 56.4 |  |
 >100$ |  | 281,581 | 43.6 |  |
Median travel time to work | Censusb: Block group | Â | Â | 3 |
 <15 min |  | 51,038 | 7.9 |  |
 15–30 min |  | 473,988 | 73.3 |  |
 >30 min |  | 121,524 | 18.8 |  |
Actual facilitya characteristics | Â | Â | Â | Â |
Academic status | Facility levela | Â | Â | 172,334 |
 Academic |  | 65,966 | 13.9 |  |
 Non-academic |  | 408,253 | 86.1 |  |
Practice type | Facility levela | Â | Â | 172,334 |
 Multispecialty |  | 126,331 | 26.6 |  |
 General radiology |  | 330,449 | 69.7 |  |
 Breast imaging only |  | 13,370 | 2.8 |  |
 Non-radiology |  | 4069 | 0.9 |  |