CT, NG and TV dual-infection* and triple-infection† positivity, by age group and sex
| Tested for all STIs | Any of the three STIs | Dual infections | Triple infections | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CT or NG or TV | CT and NG only | CT and TV only | NG and TV only | CT and NG and TV | ||||||||
| n | n | % (95% CI) | n | % (95% CI) | n | % (95% CI) | n | % (95% CI) | n | % (95% CI) | ||
| Overall | 13 480 | 3893 | 28.9 (28.1 to 29.7) | 371 | 2.8 (2.5 to 3.0) | 261 | 1.9 (1.7 to 2.1) | 232 | 1.7 (1.5 to 1.9) | 176 | 1.3 (1.1 to 1.5) | |
| Sex | M | 4970 | 1058 | 21.3 (20.2 to 22.5) | 205 | 4.1 (3.6 to 4.7) | 21 | 0.4 (0.2 to 0.6) | 30 | 0.6 (0.5 to 0.7) | 26 | 0.5 (0.3 to 0.7) |
| F | 8510 | 2835 | 33.3 (32.3 to 34.3) | 166 | 2.0 (1.7 to 2.3) | 240 | 2.8 (2.5 to 3.2) | 202 | 2.4 (2.1 to 2.7) | 150 | 1.8 (1.5 to 2.1) | |
| Men | 16–19 | 769 | 257 | 33.4 (30.1 to 36.9) | 75 | 9.8 (7.7 to 12.1) | 6 | 0.8 (0.3 to 1.7) | 8 | 1.0 (0.4 to 2.0) | 12 | 1.6 (0.8 to 2.7) |
| 20–24 | 908 | 267 | 29.4 (26.5 to 32.5) | 71 | 7.8 (6.2 to 9.8) | 4 | 0.4 (0.1 to 1.1) | 8 | 0.9 (0.4 to 1.7) | 10 | 1.1 (0.5 to 2.0) | |
| 25–29 | 792 | 187 | 23.6 (20.7 to 26.7) | 29 | 3.7 (2.5 to 5.2) | 5 | 0.6 (0.2 to 1.5) | 5 | 0.6 (0.2 to 1.5) | 2 | 0.3 (0.0 to 0.9) | |
| 30–34 | 645 | 114 | 17.7 (14.8 to 20.8) | 19 | 2.9 (1.8 to 4.6) | 1 | 0.2 (0.0 to 0.9) | 2 | 0.3 (0.0 to 1.1) | 1 | 0.2 (0.0 to 0.9) | |
| 35+ | 1856 | 233 | 12.6 (11.1 to 14.2) | 11 | 0.6 (0.3 to 1.1) | 5 | 0.3 (0.1 to 0.7) | 7 | 0.4 (0.2 to 0.8) | 1 | 0.1 (0.0 to 0.4) | |
| Women | 16–19 | 1362 | 666 | 48.9 (46.2 to 51.6) | 59 | 4.3 (3.3 to 5.6) | 96 | 7.0 (5.7 to 8.5) | 65 | 4.8 (3.7 to 6.0) | 60 | 4.4 (3.4 to 5.6) |
| 20–24 | 1663 | 700 | 42.1 (39.7 to 44.5) | 77 | 4.6 (3.6 to 5.7) | 66 | 4.0 (3.1 to 5.1) | 68 | 4.1 (3.2 to 5.2) | 59 | 3.5 (2.7 to 4.5) | |
| 25–29 | 1449 | 450 | 31.1 (28.8 to 33.6) | 17 | 1.2 (0.7 to 1.9) | 39 | 2.7 (1.9 to 3.7) | 32 | 2.2 (1.5 to 3.1) | 18 | 1.2 (0.7 to 1.9) | |
| 30–34 | 1039 | 296 | 28.5 (25.8 to 31.3) | 8 | 0.8 (0.3 to 1.5) | 18 | 1.7 (1.0 to 2.7) | 19 | 1.8 (1.1 to 2.8) | 7 | 0.7 (0.3 to 1.4) | |
| 35+ | 2997 | 723 | 24.1 (22.6 to 25.6) | 5 | 0.2 (0.1 to 0.4) | 21 | 0.7 (0.4 to 1.1) | 18 | 0.6 (0.4 to 0.9) | 6 | 0.2 (0.1 to 0.4) | |
*Dual infection: proportion of unique patients tested with a positive result for two infections (and negative for the third).
†Triple infections: proportion of unique patients tested with a positive result for all three infections.
STI, sexually transmitted infection; CT, Chlamydia trachomatis; NG, Neisseria gonorrhoea; TV, Trichomonas vaginalis.