Table 1 LTFU rate and HIV incidence among FSWs stratified by demographic and behavioral characteristics at enrollment
Variables at enrollment | N | % | LTFU | HIV acquisition | ||||
|---|---|---|---|---|---|---|---|---|
| Â | Â | Â | n | PYs | rate (95Â % CI) per 100 PYs | n | PYs | rate (95Â % CI) per 100 PYs |
ALL | 1158 | 100.0 | 950 | 3199.8 | 29.69(27.85–31.62) | 33 | 3105.7 | 1.06 (0.74–1.47) |
Year of enrollment | ||||||||
 2006–2007 | 649 | 56.1 | 555 | 2084.6 | 26.62 (24.48–28.91) | 23 | 2015.9 | 1.14 (0.74–1.68) |
 2008–2009 | 334 | 28.8 | 271 | 844.8 | 32.08 (28.43–36.07) | 6 | 825.2 | 0.73 (0.30–1.50) |
 2010–2011 | 92 | 7.9 | 76 | 177.6 | 42.77 (33.94–53.22) | 4 | 171.8 | 2.33 (0.78–5.54) |
 2012–2013 | 83 | 7.2 | 48 | 92.8 | 51.72 (38.59–67.96) | 0 | 92.8 | 0 (0–2.66) |
Race | ||||||||
 Han | 808 | 69.8 | 661 | 2259.6 | 29.25 (27.09–31.55) | 22 | 2200 | 1.00 (0.64–1.49) |
 Minority | 350 | 30.2 | 289 | 940.2 | 30.74 (27.34–34.44) | 11 | 905.7 | 1.21 (0.64–2.10) |
Age | ||||||||
  ≤ 25 years | 594 | 51.3 | 531 | 1408.6 | 37.70 (34.59–41.01) | 14 | 1372.4 | 1.02 (0.58–1.67) |
  > 25 years | 564 | 48.7 | 419 | 1791.2 | 23.39 (21.23–25.71) | 19 | 1733.3 | 1.10 (0.68–1.67) |
Marital status | ||||||||
 Married/cohabiting | 454 | 39.2 | 358 | 1271.4 | 28.55 (25.73–31.6) | 12 | 1239.7 | 0.97 (0.53–1.64) |
 Unmarried/divorced/widowed | 704 | 60.8 | 592 | 1928.4 | 30.44 (28.05–32.98) | 21 | 1866 | 1.13 (0.72–1.69) |
Education | ||||||||
  ≤ 9 years | 998 | 86.2 | 820 | 2749.6 | 29.82 (27.83–31.92) | 27 | 2667.3 | 1.37 (0.68–1.45) |
  > 9 years | 160 | 13.8 | 130 | 450.2 | 28.87 (24.23–34.17) | 6 | 438.4 | 1.10 (0.57–2.82) |
Census registration | ||||||||
 Local | 322 | 27.8 | 232 | 1031.0 | 22.50 (19.74–25.54) | 11 | 1001.9 | 1.1 (0.58–1.9) |
 Other city | 836 | 72.2 | 718 | 2168.8 | 33.10 (30.75–35.59) | 22 | 2103.8 | 1.04 (0.67–1.55) |
Charge | ||||||||
 Low | 724 | 62.5 | 578 | 2127.4 | 27.17 (25.02–29.45) | 26 | 2051.9 | 1.27 (0.85–1.83) |
 High | 424 | 36.6 | 363 | 1048.4 | 34.62 (31.2–38.32) | 7 | 1029.8 | 0.68 (0.3–1.33) |
 missing | 10 | 0.9 | 9 | 24.0 | - | 0 | 23.8 | - |
Duration of sex work | ||||||||
  ≤ 3 years | 701 | 60.5 | 628 | 1571.7 | 39.96 (36.92–43.17) | 12 | 1540.2 | 0.78 (0.42–1.32) |
  > 3 years | 451 | 38.9 | 316 | 1624.8 | 19.45 (17.39–21.68) | 21 | 1562.1 | 1.34 (0.86–2.02) |
 missing | 6 | 0.5 | 6 | 3.3 | - | 0 | 3.4 |  |
Number of clients per month | ||||||||
  ≤ 30 | 1002 | 86.5 | 829 | 2718.8 | 30.49 (28.47–32.62) | 23 | 2666.5 | 0.81 (0.44–1.38) |
  > 30 | 143 | 12.3 | 110 | 446.8 | 24.62 (20.33–29.55) | 10 | 404.9 | 2.51 (1.29–4.45) |
 missing | 13 | 1.1 | 11 | 34.2 | - | 0 |  | - |
Condom use | ||||||||
 Never/Sometimes | 142 | 12.3 | 102 | 503.6 | 20.25 (16.6–24.48) | 11 | 458.6 | 2.40 (1.27–4.15) |
 Always | 1016 | 87.7 | 848 | 2696.2 | 31.45 (29.39–33.62) | 22 | 2647.1 | 0.83 (0.54–1.24) |
Drug use | ||||||||
 No | 972 | 83.9 | 828 | 2528.4 | 32.71 (30.54–35) | 20 | 2461.6 | 0.81 (0.51–1.23) |
 Yes | 186 | 16.1 | 122 | 671.4 | 18.17 (15.16–21.61) | 13 | 643.5 | 2.02 (1.13–3.36) |
Alcohol use | ||||||||
 No | 400 | 34.5 | 314 | 1109.3 | 28.32 (25.32–31.58) | 14 | 1061.2 | 1.32 (0.76–2.15) |
 Yes | 758 | 65.5 | 635 | 2090.5 | 30.37 (28.08–32.81) | 19 | 2044 | 0.93 (0.58–1.42) |
HSV-2 status | ||||||||
 Negative | 475 | 41.0 | 411 | 1140.5 | 36.04 (32.68–39.65) | 6 | 1124.1 | 0.53 (0.22–1.1) |
 Positive | 683 | 59.0 | 539 | 2059.3 | 26.17 (24.03–28.45) | 27 | 1981.6 | 1.36 (0.92–1.95) |
Syphilis status | ||||||||
 Negative | 1072 | 92.6 | 886 | 2931.1 | 30.23 (28.29–32.27) | 27 | 2869.1 | 0.94 (0.63–1.35) |
 Positive | 86 | 7.4 | 64 | 268.7 | 23.82 (18.5–30.21) | 6 | 236.6 | 2.54 (1.05–5.23) |