TABLE 5—
Model-Based, Adjusted HIV Prevalence Rates and Prevalence Rate Ratios (PRRs), by Level of Urbanization: United States, 2009
| Model-Based Black–White PRR (95% CI) |
Model-Based Hispanic–White PRR (95% CI) |
|||||
| Level of Urbanization | 10% Poverty | 20% Poverty | 30% Poverty | 10% Poverty | 20% Poverty | 30% Poverty |
| Large central metro | ||||||
| PRR | 3.9 (2.8, 5.5) | 2.0 (1.1, 3.6) | 1.0 (0.4, 2.9) | 1.4 (0.9, 2.1) | 0.8 (0.4, 1.6) | 0.4 (0.1, 1.6) |
| Black or Hispanic prevalence rate | 753 (403, 1408) | 706 (396, 1257) | 661 (365, 1198) | 444 (204, 962) | 474 (228, 986) | 506 (235, 1091) |
| White prevalence rate | 193 (104, 356) | 355 (146, 863) | 654 (180, 2378) | 320 (144, 710) | 622 (196, 1977) | 1212 (226, 6505) |
| Large fringe metro | ||||||
| PRR | 7.2 (6.1, 8.5) | 6.4 (4.4, 9.2) | 5.6 (3.0, 10.6) | 1.7 (1.3, 2.2) | 1.5 (0.8, 2.7) | 1.3 (0.4, 3.5) |
| Black or Hispanic prevalence rate | 704 (446, 1112) | 711 (448, 1128) | 718 (444, 1158) | 724 (390, 1347) | 1010 (541, 1886) | 1409 (738, 2689) |
| White prevalence rate | 98 (60, 160) | 112 (58, 215) | 127 (53, 306) | 426 (212, 855) | 691 (259, 1841) | 1120 (290, 4327) |
| Medium metro | ||||||
| PRR | 7.5 (6.3, 8.9) | 9.3 (7.1, 12.2) | 11.5 (7.0, 18.8) | 2.7 (2.1, 3.5) | 3.3 (2.1, 5.2) | 3.9 (1.7, 9.1) |
| Black or Hispanic prevalence rate | 407 (279, 592) | 383 (268, 548) | 361 (253, 515) | 379 (222, 647) | 390 (232, 656) | 402 (237, 683) |
| White prevalence rate | 54 (38, 78) | 41 (26, 66) | 31 (16, 61) | 140 (80, 244) | 119 (56, 256) | 102 (35, 300) |
| Small metro | ||||||
| PRR | 8.1 (6.5, 10.0) | 8.2 (6.5, 10.4) | 8.4 (5.6, 12.7) | 3.0 (2.1, 4.2) | 2.8 (1.9, 4.1) | 2.6 (1.4, 5.0) |
| Black or Hispanic prevalence rate | 326 (193, 551) | 321 (197, 524) | 316 (198, 505) | 610 (258, 1442) | 645 (286, 1455) | 683 (309, 1511) |
| White prevalence rate | 41 (25, 65) | 39 (23, 66) | 37 (20, 72) | 204 (90, 462) | 230 (93, 570) | 260 (87, 775) |
| Micropolitan | ||||||
| PRR | 9.2 (7.6, 11.2) | 10.7 (8.9, 12.9) | 12.4 (8.9, 17.4) | 3.5 (2.5, 4.9) | 2.9 (1.9, 4.4) | 2.3 (1.0, 5.3) |
| Black or Hispanic prevalence rate | 498 (291, 851) | 492 (293, 824) | 485 (293, 804) | 836 (293, 2385) | 1049 (379, 2902) | 1317 (483, 3588) |
| White prevalence rate | 54 (33, 90) | 46 (27, 79) | 39 (21, 73) | 236 (84, 667) | 366 (119, 1122) | 567 (147, 2186) |
| Noncore | ||||||
| PRR | 9.2 (7.3, 11.7) | 9.9 (7.8, 12.5) | 10.6 (6.6, 17.0) | 7.2 (4.1, 12.6) | 4.5 (2.5, 8.0) | 2.8 (0.9, 8.6) |
| Black or Hispanic prevalence rate | 772 (398, 1499) | 753 (393, 1442) | 733 (385, 1397) | 3045 (694, 13 369) | 3619 (878, 14 921) | 4302 (1078, 17 160) |
| White prevalence rate | 84 (44, 158) | 76 (38, 154) | 69 (29, 163) | 424 (98, 1834) | 805 (182, 3556) | 1527 (263, 8875) |
Note. CI = confidence interval. Prevalence rates are per 100 000. Trend in model-based PRR across poverty levels is statistically significant for the large central metro counties in the Black–White model (P < .01), but for no other levels of urbanization in either model (as shown by statistical significance of the poverty–race interaction term).