Table 2 Prevalence and adjusted prevalence ratios of HIV-related high-risk behaviors among different subgroups of RD use (N = 4496)
HIV-related high-risk behaviors | n/N | Prevalence | P | Adjusted prevalence ratiosa |
|---|---|---|---|---|
% (95% CI) | (95% CI) | |||
Age of sexual debut with males ≤ 20 years | < 0.001 |  | ||
 0DUs | 1476/3219 | 45.9 (44.1–47.6) |  | 1 |
 1DUs | 576/1049 | 54.9 (51.9–57.9) |  | 1.2 (1.0–1.4) |
 2DUs | 105/155 | 67.7 (60.3–75.2) |  | 1.6 (1.1–2.4) |
 3DUs | 45/70 | 64.3 (52.8–75.8) |  | 1.6 (0.9–2.8) |
Seeking male sexual partners through the Internet in the previous 6 months | < 0.001 |  | ||
 0DUs | 2091/3221 | 64.9 (63.3–66.6) |  | 1 |
 1DUs | 811/1050 | 77.2 (74.7–79.8) |  | 1.6 (1.3–1.9) |
 2DUs | 107/155 | 69.0 (61.7–76.4) |  | 1.4 (0.9–2.0) |
 3DUs | 46/70 | 65.7 (54.3–77.1) |  | 1.5 (0.9–2.5) |
Had group sex in the previous 6 months | < 0.001 |  | ||
 0DUs | 112/3221 | 3.5 (2.8–4.1) |  | 1 |
 1DUs | 55/1050 | 5.2 (3.9–6.6) |  | 1.8 (1.2–2.5) |
 2DUs | 6/155 | 3.9 (0.8–6.9) |  | 2.3 (0.9–5.9) |
 3DUs | 10/70 | 14.3 (5.9–22.7) |  | 5.8 (2.4–14.4) |
Had more than two male sexual partners in the previous 6 months | < 0.001 |  | ||
 0DUs | 1184/3220 | 36.8 (35.1–38.4) |  | 1 |
 1DUs | 490/1047 | 46.8 (43.8–49.8) |  | 1.6 (1.3–1.8) |
 2DUs | 77/155 | 49.7 (41.7–57.6) |  | 1.3 (0.9–1.9) |
 3DUs | 34/70 | 48.6 (36.6–60.6) |  | 1.3 (0.8–2.1) |
Had commercial sex in the previous 6 months | < 0.001 |  | ||
 0DUs | 258/3221 | 8.0 (7.1–8.9) |  | 1 |
 1DUs | 136/1050 | 13.0 (10.9–15.0) |  | 1.2 (0.9–1.5) |
 2DUs | 49/155 | 31.6 (24.2–39.0) |  | 2.0 (1.3–3.0) |
 3DUs | 16/70 | 22.9 (12.8–32.9) |  | 1.3 (0.7–2.5) |
Had mucosally traumatic sex in the previous 6 months | 0.002 |  | ||
 0DUs | 459/3221 | 14.3 (13.0–15.5) |  | 1 |
 1DUs | 201/1050 | 19.1 (16.8–21.5) |  | 1.4 (1.2–1.8) |
 2DUs | 22/155 | 14.2 (8.6–19.7) |  | 2.8 (1.5–5.1) |
 3DUs | 13/70 | 18.6 (9.2–27.9) |  | 1.9 (0.9–4.0) |
Had a condom break during AI in the previous 6 months | 0.006 |  | ||
 0DUs | 255/3221 | 7.9 (7.0–8.8) |  | 1 |
 1DUs | 109/1050 | 10.4 (8.5–12.2) |  | 1.3 (1.0–1.7) |
 2DUs | 14/155 | 9.0 (4.5–13.6) |  | 2.3 (1.2–4.4) |
 3DUs | 12/70 | 17.1 (8.1–26.2) |  | 2.6 (1.2–5.6) |
Had STI-related symptom in the previous year | < 0.001 |  | ||
 0DUs | 169/3221 | 5.2 (4.5–6.0) |  | 1 |
 1DUs | 81/1050 | 7.7 (6.1–9.3) |  | 1.7 (1.3–2.3) |
 2DUs | 15/154 | 9.7 (5.0–14.5) |  | 2.4 (1.3–4.5) |
 3DUs | 11/70 | 15.7 (7.0–24.5) |  | 3.3 (1.6–6.8) |
Had non-Chinese male sexual partner in the previous 6 months | 0.039 |  | ||
 0DUs | 30/2668 | 1.1 (0.7–1.5) |  | 1 |
 1DUs | 17/867 | 2.0 (1.0–2.9) |  | 2.4 (1.2–4.5) |
 2DUs | 5/138 | 3.6 (0.5–6.8) |  | 10.0 (3.1–31.9) |
 3DUs | 1/51 | 2.0 (0.0–5.9) |  | 6.6 (0.7–59.1) |