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Table 2 Absolute and relative percent changes in invasive and in situ breast cancer rates among non-Hispanic white women aged 50 to 74 years by county rural/urban and poverty status for the years 2001 and 2004 (NAACCR, CINA Deluxe).

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

  2001 rate (95% CI) 2004 rate (95% CI) Absolute change (95% CI) Relative change P value for difference
  Invasive
Overall 366.7 (363.8 to 369.6) 318.4 (315.8 to 321.0) -48.3 (-52.19 to -44.41) -13.2% <0.001
Rural/urban status      
Urban 375.1 (371.9 to 378.3) 323.5 (320.6 to 326.4) -51.6 (-55.9 to -47.3) -13.8% <0.001
Suburban 327.9 (320.1 to 335.8) 292.9 (285.7 to 300.2) -35 (-45.7 to -24.3) -10.7% <0.001
Rural 306.2 (292.9 to 320.1) 283.1 (270.5 to 295.1) -23.1 (-41.6 to -4.5) -7.5% 0.02
County poverty level      
Low-poverty counties (<10% below FPL) 370.4 (365.8 to 375.1) 322.4 (318.2 to 326.6) -48 (-54.3 to -41.8) -13.0% <0.001
Middle-poverty counties (10 to 19.9% below FPL) 367.0 (363.1 to 371.0) 316.5 (312.9 to 320.1) -50.5 (-55.8 to -45.2) -13.8% <0.001
High-poverty counties (20+% below FPL) 337.6 (326.2 to 349.2) 305.1 (294.5 to 316.1) -32.5 (-48.2 to -16.8) -9.6% <0.001
  In situ
Overall 89.0 (87.6 to 90.4) 84.7 (83.3, 86.1) -4.3 (-6.2 to -2.4) -4.8% <0.001
Rural/urban status      
Urban 93.2 (91.6 to 94.8) 88.1 (86.5 to 89.6) -5.1 (-7.3 to -2.9) -5.5% <0.001
Suburban 67.5 (64.0 to 71.2) 68.7 (65.2 to 72.3) +1.2 (-3.8 to +6.2) +1.7% 0.6
Rural 64.3 (58.2 to 70.8) 59.1 (53.4 to 65.2) -5.2 (-13.8 to +3.4) -8.1% 0.2
County poverty level      
Low-poverty counties (<10% below FPL) 97.4 (95.1 to 99.8) 93.9 (91.6 to 96.1) -3.5 (-6.7 to -0.3) -3.6% 0.03
Middle-poverty counties (10 to 19.9% below FPL) 84.0 (82.2 to 86.0) 78.9 (77.1 to 80.7) -5.1 (-7.7 to -2.5) -6.1% <0.001
High-poverty counties (20+% below FPL) 76.5 (71.1 to 82.2) 72.6 (67.4 to 78.0) -3.9 (-11.5 to +3.7) -5.1% 0.3
  1. CI = confidence interval; FPL = federal poverty level