Factors | n | Person-years | HIV positive (n) | HIV rate per 100 person-years (95% CI) | HR (95% CI) | P | aHR (95% CI) | P |
---|---|---|---|---|---|---|---|---|
City | ||||||||
 Tianjin | 639 | 763.31 | 15 | 1.97 (1.1–3.24) | 1 |  |  |  |
 Shanghai | 417 | 497.27 | 18 | 3.62 (2.15–5.73) | 1.77 (0.89–3.52) | 0.10 |  |  |
Population type | ||||||||
 Transgender women | 439 | 519.92 | 23 | 4.42 (2.8–6.62) | 3.27 (1.55–6.87) | 0.00 | 3.06 (1.46, 6.45) | 0.003 |
 Cisgender MSM | 617 | 740.65 | 10 | 1.35 (0.65–2.48) | 1 |  | 1 |  |
Age (years) | ||||||||
  ≤ 24 | 273 | 364.52 | 12 | 3.29 (1.7–5.73) | 1 |  |  |  |
 25–29 | 385 | 456.66 | 5 | 1.09 (0.35–2.55) | 0.31 (0.11–0.87) | 0.03 |  |  |
  ≥ 30 | 398 | 471 | 16 | 3.40 (1.94–5.51) | 0.97 (0.46–2.04) | 0.93 |  |  |
Local residence time (years) | ||||||||
  > 2 | 675 | 800.26 | 14 | 1.75 (0.96–2.93) | 1 |  |  |  |
  ≤ 2 | 381 | 460.31 | 19 | 4.13 (2.47–6.44) | 1.53 (1.08–2.154) | 0.02 |  |  |
Marital status | ||||||||
 Single | 739 | 871.2 | 21 | 2.41 (1.49–3.68) | 1 |  |  |  |
 Married/cohabiting | 177 | 213.83 | 7 | 3.27 (1.32–6.73) | 1.34 (0.57–3.14) | 0.51 |  |  |
 Divorced/widowed | 140 | 207.15 | 5 | 2.41 (0.78–5.63) | 1.11 (0.42–2.94) | 0.84 |  |  |
Education (years) | ||||||||
  ≤ 9 | 90 | 104.35 | 3 | 2.87 (0.59–8.39) | 1 |  |  |  |
 10–12 | 262 | 316.79 | 9 | 2.84 (1.3–5.37) | 1.01 (0.27–3.72) | 0.99 |  |  |
  ≥ 13 | 704 | 871.04 | 21 | 2.41 (1.49–3.68) | 0.84 (0.25–2.81) | 0.77 |  |  |
Work status | ||||||||
 Unemployed | 72 | 84.74 | 2 | 2.36 (0.28–8.5) | 1 |  |  |  |
 Student | 103 | 130.71 | 3 | 2.30 (0.47–6.7) | 0.91 (0.15–5.45) | 0.92 |  |  |
 Full-time job | 350 | 463.8 | 16 | 3.45 (1.97–5.6) | 1.46 (0.34–6.36) | 0.62 |  |  |
 Part-time job | 531 | 612.93 | 12 | 1.96 (1.01–3.41) | 0.83 (0.19–3.69) | 0.80 |  |  |
Average monthly income (RMB) | ||||||||
  < 1000 | 293 | 358.39 | 5 | 1.40 (0.45–3.25) | 1 |  |  |  |
 1000–5000 | 412 | 480.47 | 17 | 3.54 (2.06–5.68) | 2.61 (0.96–7.07) | 0.06 |  |  |
  > 5000 | 351 | 453.33 | 11 | 2.43 (1.21–4.35) | 1.79 (0.62–5.15) | 0.28 |  |  |
Sex orientation | ||||||||
 Gay | 883 | 1097.48 | 23 | 2.10 (1.32–3.14) | 1 |  |  |  |
 Heterosexual & others | 62 | 76.24 | 3 | 3.94 (0.81–11.48) | 1.84 (0.55–6.15) | 0.32 |  |  |
 Bisexual | 111 | 86.85 | 7 | 8.06 (3.25–16.57) | 6.03 (2.48–14.66) | 0.00 |  |  |
Age of sexual debut (years) | ||||||||
  < 18 | 237 | 299.47 | 6 | 2.00 (0.73–4.34) | 0.69 (0.28–1.66) | 0.41 |  |  |
  ≥ 18 | 819 | 992.71 | 27 | 2.72 (1.79–3.96) | 1 |  |  |  |
Frequency of anal sex (past 1Â m)a | ||||||||
  < 3 | 666 | 826.3 | 14 | 1.69 (0.93–2.83) | 1 |  |  |  |
  ≥ 3 | 390 | 465.89 | 19 | 4.08 (2.44–6.36) | 2.28 (1.14–4.55) | 0.02 |  |  |
Unprotected anal sex last timea | ||||||||
 Yes | 163 | 182.84 | 16 | 8.75 (4.99–14.21) | 5.79 (2.92–11.47) | 0.00 | 5.53 (2.78, 10.99) | 0.000 |
 No | 893 | 1077.73 | 17 | 1.58 (0.92–2.53) | 1 |  | 1 |  |
Group sex (past 3Â m)a | ||||||||
 Yes | 48 | 59.02 | 4 | 6.78 (1.86–17.34) | 1 |  |  |  |
 No | 1008 | 1233.16 | 29 | 2.35 (1.57–3.38) | 0.37 (0.13–1.06) | 0.06 |  |  |
Stable partner (past 3Â m)a | ||||||||
 Yes | 512 | 649.75 | 15 | 2.31 (1.29–3.81) | 1 |  |  |  |
 No | 544 | 642.43 | 18 | 2.80 (1.66–4.43) | 1.20 (0.6–2.38) | 0.61 |  |  |
Casual partner (past 3Â m)a | ||||||||
 Yes | 695 | 835.72 | 23 | 2.75 (1.74–4.12) | 1 |  |  |  |
 No | 361 | 456.46 | 10 | 2.19 (1.05–4.02) | 0.81 (0.39–1.71) | 0.58 |  |  |
Self-reported sexually transmitted infections (past 6Â m)a | ||||||||
 No | 991 | 1178.87 | 30 | 3.03 (1.72–3.64) | 1 |  |  |  |
 Yes | 65 | 81.71 | 3 | 4.62 (0.75, 10.71) | 1.39 (0.42–4.55) | 0.51 |  |  |
Discrimination-related experience at all settings (past 6Â m)a | ||||||||
 Yes | 655 | 776.8 | 26 | 3.35 (2.18–4.91) | 2.68 (1.16–6.17) | 0.02 |  |  |
 No | 401 | 515.38 | 7 | 1.36 (0.55–2.79) | 1 |  |  |  |