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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).

From: Recent trends in breast cancer incidence in US white women by county-level urban/rural and poverty status

  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
  1. FPL = federal poverty level.