Table 6. Frequency of ORs greater than 1 by income at the county level in the United States and the nine divisions.

	Income	Count (percentage)	Minimum (95%CI)	Maximum (95%CI)	Mean
United States	Low income	346(30.2%)	1.029(1.006, 1.053)	9.809(9.558,10.067)	3.340
Division 1	Low income	19(65.5%)	1.149(1.136,1.163)	9.809(9.558,10.067)	4.116
Division 2	Low income	49(60.5%)	1.040(1.018,1.062)	9.653(9.380,9.935)	3.263
Division 3	Low income	74(42.5%)	1.064(1.041,1.088)	9.497(9.300,9.699)	3.673
Division 4	Low income	47(25.1%)	1.057(1.041,1.073)	9.095(8.680,9.530)	3.437
Division 5	Low income	58(27.1%)	1.056(1.046,1.065)	9.269(9.026,9.520)	9.269
Division 6	Low income	31(32.0%)	1.029(1.006,1.053)	9.436(9.316,9.558)	3.039
Division 7	Low income	20(10.3%)	1.107(1.088,1.127)	8.754(8.393,9.130)	2.642
Division 8	Low income	20(19.8%)	1.087(1.074,1.101)	9.175(9.126,9.224)	3.936
Division 9	Low income	28(40.6%)	1.178(1.150,1.208)	8.609(8.458,8.764)	3.079

CI: confident interval;

Percentage was derived by the number of geographic units for low income level divided by the total number of counties at each geographic division.