Table 1 Characteristics of invasive and in situ breast cancer cases among non-Hispanic white women aged 50 to 74 years, 1997 to 2004 (NAACCR, CINA Deluxe).
| Â | Invasive (n = 651,395) | In situ (n = 145,216) | ||
|---|---|---|---|---|
Characteristic | n | % | n | % |
   Rural/urban status |  |  |  |  |
Urban | 407,202 | 85.7 | 98,473 | 88.0 |
Suburban | 52,304 | 11.0 | 10,341 | 9.2 |
Rural | 15,891 | 3.3 | 3,035 | 2.7 |
   County poverty level |  |  |  |  |
   Low-poverty counties (<10% below FPL) | 191,562 | 40.3 | 49,449 | 44.2 |
   Middle-poverty counties (10 to19.9% below FPL) | 256,910 | 54.0 | 56,716 | 50.7 |
   High-poverty counties (20+% below FPL) | 26,925 | 5.7 | 5,684 | 5.1 |