TABLE 1.
Demographic characteristics, injection drug use (IDU), and HIV status of African-American men who have sex with men (MSM) participating in the Black men testing (BMT) respondent-driven sampling (RDS) survey, San Francisco, 2009 (N = 252)
| Characteristic | Crude count (%) | RDS-II weighted percent (95 % CI) | Gile’s SS weighted percent (95 % CI) | Difference |
|---|---|---|---|---|
| Age group (years) | ||||
| 18–20 | 2 (0.8) | 3.1 (0.9, 5.3) | 3.2 (−1.1, 7.4) | 0.1 |
| 21–25 | 12 (4.8) | 12.0 (7.6, 16.3) | 12.5 (1.7, 23.8) | 0.5 |
| 26–30 | 17 (6.8) | 4.8 (−5.0, 14.5) | 5.0 (1.5, 8.5) | 0.2 |
| 31–35 | 17 (6.8) | 4.6 (1.8, 7.3) | 4.8 (1.6, 8.1) | 0.2 |
| 36–40 | 25 (9.9) | 11.8 (0.3, 23.2) | 12.3 (2.7, 22.0) | 0.5 |
| 41–45 | 58 (23.0) | 17.1 (11.8, 22.4) | 18.0 (11.2, 24.7) | 0.9 |
| 46–50 | 58 (23.0) | 19.9 (11.1, 28.6) | 16.1 (8.5, 23.7) | −3.8 |
| 51+ | 63 (25.0) | 26.9 (21.6, 32.1) | 28.2 (17.2, 39.2) | 1.3 |
| Education | ||||
| <High school | 37 (14.7) | 18.9 (8.6, 29.2) | 14.8 (7.8, 21.9) | −4.1 |
| High school | 98 (38.9) | 47.9 (35.5, 60.4) | 50.2 (38.2, 62.2) | 2.3 |
| >High school | 117 (46.4) | 33.2 (22.6, 43.8) | 35.0 (24.4, 45.6) | 1.8 |
| Annual income | ||||
| 0–10k | 106 (42.1) | 55.1 (42.2, 68.1) | 52.6 (41.9, 63.2) | −2.5 |
| 11–20k | 66 (26.2) | 20.7 (11.2, 30.3) | 22.0 (14.5, 29.4) | 1.3 |
| 21–30k | 36 (14.3) | 9.1 (−1.5, 19.7) | 9.7 (4.2, 15.1) | 0.6 |
| 31k+ | 44 (17.5) | 15.0 (6.8, 23.2) | 15.8 (8.5, 23.2) | 0.8 |
| Ever injected drugs (yes) | 92 (36.5) | 32.8 (20.9, 44.8) | 29.5 (21.2, 37.9) | −3.3 |
| Injected drugs in last 6 months (yes) | 40 (15.9) | 11.2 (5.2, 17.2) | 11.8 (6.0, 17.7) | 0.6 |
| Ever tested for HIV (yes) | 235 (93.3) | 93.3 (86.6, 99.9) | 92.9 (88.3, 97.5) | −0.4 |
| Diagnosed with HIV prior to survey (of 229 respondents) | 68 (29.7) | 21.7 (12.7, 30.7) | 27.0 (15.8, 38.2) | 5.3 |
| Positive HIV test result during survey (of 245 tested) | 79 (32.2) | 25.9 (14.2, 37.6) | 34.0 (22.2, 45.9) | 8.1 |