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).

	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

CI = confidence interval; FPL = federal poverty level