TABLE. Associations between new diagnoses of HIV infection among Black adults and Social Vulnerability Index* of Census tract, by selected characteristics — United States, 2018.
| Characteristic | Total no. (column %) | Quartile 1 (lowest vulnerability) |
Quartile 2 |
Quartile 3 |
Quartile 4 (highest vulnerability) |
Quartile 4 versus Quartile 1 |
||||
|---|---|---|---|---|---|---|---|---|---|---|
| No. (row %) | Rate | No. (row %) | Rate | No. (row %) | Rate | No. (row %) | Rate | RR† (95% CI) | ||
|
Male (sex at birth)
| ||||||||||
|
Age group at diagnosis, yrs
| ||||||||||
| 18–24 |
2,950 (28.9) |
221 (7.5) |
95.8 |
406 (13.8) |
100.4 |
773 (26.2) |
115.4 |
1,477 (50.1) |
145.3 |
1.5 (1.3–1.7) |
| 25–34 |
3,985 (39.0) |
315 (7.9) |
108.2 |
591 (14.8) |
114.2 |
1,026 (25.7) |
120.3 |
1,998 (50.1) |
153.6 |
1.4 (1.3–1.6) |
| 35–44 |
1,494 (14.6) |
133 (8.9) |
44.8 |
205 (13.7) |
45.4 |
384 (25.7) |
54.8 |
746 (49.9) |
72.8 |
1.6 (1.3–2.0) |
| 45–54 |
1,010 (9.9) |
68 (6.7) |
22.5 |
144 (14.3) |
32.5 |
229 (22.7) |
33.7 |
545 (54.0) |
51.8 |
2.3 (1.8–3.0) |
| ≥55 |
769 (7.5) |
75 (9.8) |
18.7 |
91 (11.8) |
14.1 |
171 (22.2) |
16.0 |
422 (54.9) |
22.9 |
1.2 (1.0–1.6) |
|
Transmission category§
| ||||||||||
| Male-to-male sexual contact |
8,140 (79.7) |
674 (8.3) |
— |
1,158 (14.2) |
— |
2,113 (26.0) |
— |
4,039 (49.6) |
— |
— |
| Injection drug use |
335 (3.3) |
20 (6.1) |
— |
39 (11.7) |
— |
78 (23.4) |
— |
189 (56.4) |
— |
— |
| Male-to-male sexual contact and injection drug use |
215 (2.1) |
10 (4.8) |
— |
35 (16.1) |
— |
48 (22.3) |
— |
116 (53.9) |
— |
— |
| Heterosexual contact |
1,510 (14.8) |
107 (7.1) |
— |
204 (13.5) |
— |
341 (22.6) |
— |
840 (55.6) |
— |
— |
| Other |
9 (0.1) |
0 (3.5) |
— |
1 (14.0) |
— |
3 (30.2) |
— |
5 (52.3) |
— |
— |
|
Region of residence
| ||||||||||
| Northeast |
1,460 (14.3) |
75 (5.1) |
34.3 |
169 (11.6) |
44.9 |
324 (22.2) |
52.0 |
876 (60.0) |
79.0 |
2.3 (1.8–2.9) |
| Midwest |
1,539 (15.1) |
120 (7.8) |
42.6 |
211 (13.7) |
54.4 |
385 (25.0) |
58.0 |
804 (52.2) |
74.2 |
1.7 (1.4–2.1) |
| South |
6,351 (62.2) |
556 (8.8) |
64.3 |
940 (14.8) |
66.5 |
1,659 (26.1) |
71.7 |
3,056 (48.1) |
87.4 |
1.4 (1.2–1.5) |
| West |
858 (8.4) |
61 (7.1) |
38.8 |
117 (13.6) |
41.5 |
215 (25.1) |
57.6 |
452 (52.7) |
81.8 |
2.1 (1.6–2.8) |
|
Subtotal
|
10,208 (100)
|
812 (8)
|
53.3
|
1,437 (14.1)
|
58.4
|
2,583 (25.3)
|
65.0
|
5,188 (50.8)
|
83.1
|
1.6 (1.4–1.7)
|
|
Female (sex at birth)
| ||||||||||
|
Age group at diagnosis, yrs
| ||||||||||
| 18–24 |
478 (13.3) |
27 (5.6) |
13.4 |
59 (12.3) |
15.8 |
101 (21.1) |
15.9 |
284 (59.4) |
27.1 |
2.0 (1.4–3.0) |
| 25–34 |
946 (26.3) |
65 (6.9) |
23.2 |
100 (10.6) |
19.6 |
204 (21.6) |
24.1 |
557 (58.9) |
37.0 |
1.6 (1.2–2.1) |
| 35–44 |
866 (24.1) |
48 (5.5) |
15.6 |
112 (12.9) |
22.8 |
227 (26.2) |
30.0 |
465 (53.7) |
37.6 |
2.4 (1.8–3.3) |
| 45–54 |
689 (19.1) |
48 (7.0) |
15.2 |
88 (12.8) |
18.1 |
160 (23.2) |
20.8 |
381 (55.3) |
30.4 |
2.0 (1.5–2.7) |
| ≥55 |
620 (17.2) |
45 (7.3) |
9.6 |
85 (13.7) |
10.4 |
148 (23.9) |
10.5 |
330 (53.2) |
13.0 |
1.4 (1.0–1.8) |
|
Transmission category§
| ||||||||||
| Injection drug use |
264 (7.3) |
13 (4.9) |
— |
32 (12.2) |
— |
56 (21.0) |
— |
160 (60.8) |
— |
— |
| Heterosexual contact |
3,315 (92.1) |
218 (6.6) |
— |
409 (12.3) |
— |
780 (23.5) |
— |
1,847 (55.7) |
— |
— |
| Other |
20 (0.6) |
2 (10.9) |
— |
3 (13.9) |
— |
5 (24.4) |
— |
10 (49.3) |
— |
— |
|
Region of residence
| ||||||||||
| Northeast |
630 (17.5) |
25 (4.0) |
11.9 |
86 (13.7) |
21.3 |
133 (21.1) |
18.9 |
383 (60.8) |
27.0 |
2.3 (1.5–3.4) |
| Midwest |
440 (12.2) |
44 (10.0) |
16.2 |
41 (9.3) |
10.0 |
103 (23.4) |
14.4 |
243 (55.2) |
18.0 |
1.1 (0.8–1.5) |
| South |
2,251 (62.5) |
147 (6.5) |
15.4 |
278 (12.4) |
17.3 |
530 (23.5) |
20.0 |
1,248 (55.4) |
29.6 |
1.9 (1.6–2.3) |
| West |
278 (7.7) |
17 (6.1) |
12.5 |
39 (14.0) |
15.2 |
74 (26.6) |
21.1 |
143 (51.4) |
23.8 |
1.9 (1.1–3.1) |
|
Subtotal
|
3,599 (100)
|
233 (6.5)
|
14.8
|
444 (12.3)
|
16.6
|
840 (23.3)
|
19.0
|
2,017 (56.0)
|
26.6
|
1.8 (1.6–2.1)
|
| Total¶ | 13,807 (100) | 1,045 (7.6) | 33.7 | 1,881 (13.6) | 36.6 | 3,423 (24.8) | 40.8 | 7,205 (52.2) | 52.1 | 1.5 (1.4–1.6) |
Abbreviations: RR = rate ratio; SVI = Social Vulnerability Index.
* SVI scores represent percentile rankings by Census tract, ranging from 0–1, with higher scores indicating more vulnerability. Scores were categorized into quartiles based on distribution among all U.S. Census tracts. https://www.atsdr.cdc.gov/placeandhealth/svi/index.html
† Two rates are statistically different if the 95% CI does not include 1.0.
§ Numbers have been adjusted for missing transmission category and rounded to integers. Rates and RRs for transmission categories were not calculated because of lack of population data.
¶ Total includes 253 cases without SVI rankings.