TABLE 2—
Descriptive Statistics, Observed Prevalence Rates, and Observed Prevalence Rate Ratios (PRRs) for Counties Included in Black–White Models, Aggregated by Level of Urbanization: United States, 2009
| Black |
White |
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| Level of Urbanization | Cases, No. (%)a | Population, No. (%) | Observed Prevalence Rateb | % Poverty, Mean (SD)c | Cases, No. (%)a | Population, No. (%) | Observed Prevalence Rateb | % Poverty, Mean (SD)c | Observed PRR |
| Large central metro | 171 496 (57) | 10 562 760 (43) | 1624 | 24.8 (6.2) | 134 045 (57) | 33 185 754 (28) | 404 | 8.5 (2.5) | 4.0 |
| Large fringe metro | 50 419 (17) | 5 072 003 (21) | 994 | 20.1 (10.1) | 41 778 (18) | 31 677 663 (27) | 132 | 7.6 (3.4) | 7.5 |
| Medium metro | 47 132 (16) | 4 752 163 (19) | 992 | 27.0 (8.4) | 39 502 (17) | 29 044 768 (25) | 136 | 9.9 (2.9) | 7.3 |
| Small metro | 14 570 (5) | 1 847 792 (7) | 789 | 30.5 (10.0) | 11 601 (5) | 11 912 386 (10) | 97 | 11.8 (4.2) | 8.1 |
| Micropolitan | 13 990 (5) | 1 726 128 (7) | 811 | 33.3 (11.1) | 8083 (3) | 9 031 035 (8) | 90 | 13.4 (4.0) | 9.1 |
| Noncore | 5832 (2) | 714 082 (3) | 817 | 33.6 (13.9) | 2167 (1) | 2 290 277 (2) | 95 | 13.8 (3.6) | 8.6 |
| Total | 303 439 (100) | 24 674 928 (100) | 1230 | 11.1 (4.3) | 237 176 (100) | 117 141 883 (100) | 203 | 28.6 (11.6) | 6.1 |
Note. Counties are from the 46 states with confidential name-based HIV infection reporting since at least January 2007 that met the inclusion criteria.
a
Cases represent the estimated number of persons aged 13 years and older living with a diagnosis of HIV infection at the end of 2009.
b
Prevalence rate per 100 000.
c
Mean percentage of poverty represents the mean race-specific poverty of all counties within the given stratum of urbanization included in the analysis.