Table 2.
Prevalence of sexually transmitted infections by sex and age among enrolled participants
| Age group | Overall | Males | Females | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/N | % | 95% CI | n/N | % | 95% CI | n/N | % | 95% CI | |
| Herpes simplex virus type 2 antibodies | |||||||||
| 15–19 | 320/1609 | 16.5 | 14.2–18.9 | 55/657 | 8.4 | 6.0– 10.9 | 265/952 | 24.7 | 21.0–28.4 |
| 20–24 | 935/2074 | 40.5 | 37.3–43.6 | 189/812 | 21.8 | 17.7– 26.0 | 746/1262 | 59.0 | 55.3–62.8 |
| 25–29 | 1146/1682 | 63.7 | 60.1–67.4 | 306/596 | 51.5 | 45.4– 57.5 | 840/1086 | 75.3 | 70.8–79.8 |
| 30–34 | 1029/1293 | 76.2 | 72.8–79.6 | 316/460 | 66.0 | 60.8– 71.2 | 713/833 | 85.8 | 82.6– 88.9 |
| 35–39 | 962/1163 | 80.1 | 76.3–83.8 | 297/403 | 73.1 | 67.1– 79.1 | 665/760 | 86.5 | 83.0– 89.9 |
| 40–44 | 865/979 | 87.7 | 84.5–91.0 | 261/319 | 84.2 | 79.1– 89.3 | 604/660 | 90.7 | 87.1– 94.3 |
| 45–49 | 872/986 | 86.5 | 83.2–89.8 | 220/286 | 77.7 | 71.2– 84.2 | 652/700 | 92.5 | 90.1– 95.0 |
| Overall | 6129/9786 | 57.8 | 56.1–59.6 | 1644/3533 | 46.1 | 43.4– 48.7 | 4485/6253 | 68.8 | 66.9– 70.7 |
| Syphilis antibodiesa | |||||||||
| 15–19 | 17/1613 | 0.9 | 0.4 – 1.5 | 5/658 | 0.5 | 0.5– 1.1 | 12/955 | 1.3 | 0.3– 2.3 |
| 20–24 | 57/2080 | 2.3 | 1.5 – 3.1 | 17/814 | 1.9 | 0.7– 3.2 | 40/1266 | 2.6 | 1.7– 3.6 |
| 25–29 | 33/1688 | 1.5 | 0.8 – 2.2 | 9/602 | 0.9 | 0.1– 1.7 | 24/1086 | 2.1 | 0.9– 3.3 |
| 30–34 | 24/1294 | 1.7 | 0.7 – 2.8 | 8/461 | 1.9 | 0– 3.9 | 16/833 | 1.5 | 0.5– 2.5 |
| 35–39 | 17/1165 | 2.0 | 0.7 – 3.2 | 9/405 | 3.1 | 0.7– 5.5 | 8/760 | 1.0 | 0.1– 1.8 |
| 40–44 | 19/980 | 1.8 | 0.9 – 2.7 | 8/320 | 2.0 | 0.5– 3.4 | 11/660 | 1.7 | 0.4– 3.0 |
| 45–49 | 7/988 | 0.5 | 0 – 1.0 | 1/287 | 0.5 | 0– 1.5 | 6/701 | 0.5 | 0.1– 1.0 |
| Total | 174/9808 | 1.6 | 1.2 – 2.0 | 57/3547 | 1.5 | 1.0– 2.0 | 117/6261 | 1.7 | 1.3– 2.1 |
| Neisseria gonorrhoeae | |||||||||
| 15–19 | 54/1611 | 2.6 | 1.7–3.4 | 11/656 | 1.0 | 0.3– 1.6 | 43/955 | 4.2 | 2.7– 5.7 |
| 20–24 | 98/2074 | 4.7 | 3.5–6.0 | 21/811 | 2.9 | 1.4– 4.5 | 77/1263 | 6.5 | 4.9– 8.2 |
| 25–29 | 59/1683 | 3.6 | 2.3–4.8 | 20/600 | 2.8 | 1.1– 4.4 | 39/1083 | 4.4 | 2.4– 6.3 |
| 30–34 | 37/1288 | 2.9 | 1.6–4.2 | 11/458 | 2.5 | 0.4– 4.7 | 26/830 | 3.2 | 1.6– 4.8 |
| 35–39 | 21/1162 | 1.0 | 0.4–1.6 | 3/403 | 0.5 | 0.0– 1.1 | 18/759 | 1.5 | 0.7– 2.3 |
| 40–44 | 15/974 | 1.5 | 0.5–2.5 | 3/315 | 0.7 | 0.0– 1.5 | 12/659 | 2.2 | 0.6– 3.8 |
| 45–49 | 11/986 | 0.6 | 0.2–1.1 | 0/286 | – | – | 11/700 | 1.1 | 0.3– 1.8 |
| Total | 295/9778 | 2.8 | 2.3–3.3 | 69/3529 | 1.8 | 1.0– 2.5 | 226/6249 | 3.7 | 3.1– 4.3 |
| Chlamydia trachomatis | |||||||||
| 15–19 | 171/1611 | 9.2 | 7.6–10.9 | 31/656 | 4.4 | 2.5– 6.2 | 140/955 | 14.1 | 11.6– 16.7 |
| 20–24 | 257/2074 | 12.1 | 10.3–13.9 | 67/811 | 8.6 | 6.2– 11.0 | 190/1263 | 15.6 | 13.1– 18.2 |
| 25–29 | 163/1683 | 8.6 | 6.9–10.4 | 52/600 | 7.5 | 5.1– 10.0 | 111/1083 | 9.7 | 7.3– 12.2 |
| 30–34 | 74/1288 | 5.4 | 3.6–7.1 | 23/458 | 5.5 | 2.5– 8.5 | 51/830 | 5.2 | 3.5– 6.9 |
| 35–39 | 45/1162 | 3.0 | 1.8–4.2 | 10/403 | 1.3 | 0.4– 2.2 | 35/759 | 4.5 | 2.5– 6.6 |
| 40–44 | 22/974 | 1.9 | 1.0–2.9 | 4/315 | 1.1 | 0.0– 2.3 | 18/659 | 2.6 | 1.1– 4.1 |
| 45–49 | 11/986 | 0.7 | 0.2–1.3 | 1/286 | 0.4 | 0.0– 1.3 | 10/700 | 1.0 | 0.2– 1.7 |
| Total | 743/9778 | 7.1 | 6.5–7.7 | 188/3529 | 5.1 | 4.2 –6.0 | 555/6249 | 9.0 | 8.1 – 9.9 |
| Trichomonas vaginalis | |||||||||
| 15–19 | 113/1611 | 6.0 | 4.6–7.3 | 6/656 | 0.6 | 0.0– 1.1 | 107/955 | 11.4 | 9.0– 13.8 |
| 20–24 | 210/2074 | 7.3 | 6.0–8.7 | 14/811 | 1.8 | 0.7– 3.0 | 196/1263 | 12.8 | 10.3– 15.2 |
| 25–29 | 204/1682 | 8.3 | 6.5–10.1 | 24/599 | 3.2 | 1.5– 5.0 | 180/1083 | 13.2 | 10.5– 15.8 |
| 30–34 | 129/1288 | 7.7 | 5.9–9.6 | 17/458 | 4.3 | 1.7– 6.9 | 112/830 | 11.0 | 8.2– 13.8 |
| 35–39 | 174/1162 | 12.1 | 9.2–15.1 | 29/403 | 6.6 | 3.3– 9.9 | 145/759 | 17.3 | 13.4– 21.1 |
| 40–44 | 161/974 | 13.6 | 10.7–16.6 | 46/315 | 11.2 | 7.4– 15.1 | 115/659 | 15.6 | 11.7– 19.5 |
| 45–49 | 166/986 | 14.2 | 11.3–17.1 | 19/286 | 6.5 | 2.9– 10.1 | 147/700 | 19.5 | 15.4– 23.5 |
| Total | 1157/9777 | 9.0 | 8.1–9.9 | 155/3528 | 3.9 | 3.1– 4.6 | 1002/6249 | 13.8 | 12.3 – 15.2 |
| Mycoplasma genitalium | |||||||||
| 15–19 | 69/1611 | 3.6 | 2.5–4.7 | 17/656 | 1.9 | 0.8– 3.0 | 52/955 | 5.3 | 3.4– 7.2 |
| 20–24 | 138/2074 | 5.8 | 4.4–7.1 | 29/811 | 3.2 | 1.8– 4.5 | 109/1263 | 8.4 | 6.2– 10.5 |
| 25–29 | 130/1683 | 8.1 | 6.4–9.7 | 52/600 | 9.2 | 6.3– 12.1 | 78/1083 | 7.0 | 5.0– 8.9 |
| 30–34 | 80/1288 | 6.9 | 4.8–8.9 | 47/458 | 10.4 | 6.9– 13.8 | 33/830 | 3.6 | 2.0– 5.1 |
| 35–39 | 65/1162 | 6.4 | 4.5–8.4 | 33/403 | 8.2 | 4.9– 11.4 | 32/759 | 4.8 | 2.6– 7.0 |
| 40–44 | 37/974 | 3.3 | 2.0–4.5 | 19/315 | 4.4 | 1.9– 6.9 | 18/659 | 2.3 | 1.1– 3.5 |
| 45–49 | 13/986 | 1.7 | 0.5–2.9 | 7/286 | 2.6 | 0.0– 5.3 | 6/700 | 1.1 | 0.1– 2.1 |
| Total | 532/9778 | 5.5 | 4.8–6.1 | 204/3529 | 5.7 | 4.8– 6.7 | 328/6249 | 5.2 | 4.5– 6.0 |
a=
Rapid plasma reagin (RPR) assay with a quantitative titer of 1:8 or higher was considered as positive for active syphilis.