Prevalence of genital tract infections at baseline in adolescents in comparison with other age categories
| All women (n=752) | 15–19 years (n=180) | 20–24 years (n=291) | >25 years (n=281) | 20–24 vs 15–19 years (ref) | >25 vs 15–19 years (ref) | |
| OR (95% CI) P value | OR (95% CI) P value | |||||
| Trichomonas vaginalis, n (%) (95% CI) | 115 (15.1) (13.0 to 18.2) | 20 (11.1) (7.0 to 16.9) | 50 (17.2) (13.0 to 22.0) | 45 (16.0) (12.1 to 21.1) | 1.6 (0.9 to 2.8) 0.09 | 1.5 (0.9 to 2.7) 0.17 |
| Neisseria gonorrhoeae, n (%) (95% CI) | 43 (5.7) (4.3 to 7.7) | 8 (4.4) (2.0 to 8.7) | 17 (5.8) (3.4 to 9.2) | 18 (6.4) (3.9 to 10.0) | 1.3 (0.6 to 3.1) 0.57 | 1.5 (0.6 to 3.4) 0.42 |
| Chlamydia trachomatis, n (%) (95% CI) | 73 (9.8) (7.9 to 12.1) | 14 (7.8) (4.4 to 12.9) | 33 (11.3) (7.9 to 15.6) | 26 (9.3) (6.2 to 13.4) | 1.5 (0.8 to 2.9) 0.27 | 1.2 (0.6 to 2.4) 0.62 |
| Mycoplasma genitalium, n (%) (95% CI) | 26 (3.5) (2.4 to 5.1) | 9 (5.0) (2.4 to 9.4) | 7 (2.4) (1.0 to 4.9) | 10 (3.6) (1.8 to 6.5) | 0.5 (0.2 to 1.3) 0.19 | 0.7 (0.3 to 1.8) 0.48 |
| Treponema pallidum, n (%) (95% CI) | 4 (0.5) (0.2 to 1.4) | 0 (0.0) | 1 (0.3) (0.01 to 1.9) | 3 (1.1) (0.2 to 3.1) | N | N/A |
| Any STI, n (%) (95% CI) | 244 (32.5) (29.2 to 35.9) | 48 (26.7) (20.4 to 33.8) | 101 (34.7) (29.3 to 40.5) | 95 (33.8) (28.3 to 39.7) | 1.4 (1.0 to 2.1) 0.09 | 1.4 (0.9 to 2.1) 0.12 |
| Bacterial vaginosis, n (%) (95% CI) | 280 (37.5) (34.1 to 41.1) | 63 (35.0) (28.4 to 42.9) | 107 (36.8) (31.4 to 42.9) | 110 (39.2) (33.7 to 45.4) | 1.1 (0.7 to 1.6) 0.77 | 1.2 (0.8 to 1.8) 0.37 |
STI, sexually transmitted infection.