Predictors of repeat C trachomatis infection
| Characteristic | Repeat (n=24) | No repeat (n=159) | Unadjusted OR (95% CI)* | Adjusted OR (95% CI)* † |
| Baseline demographic and sexual risk history variables | ||||
| Age | ||||
| 15–19 | 17 (19.8%) | 69 (80.2%) | 3.16 (1.24 to 8.06) | 3.19 (1.23 to 8.26) |
| ≥20 | 7 (7.2%) | 90 (92.8%) | 1.0 | 1.0 |
| Race | ||||
| White | 3 (11.1%) | 24 (88.9%) | 1.0 | NI |
| African-American | 14 (13.7%) | 88 (86.3%) | 1.27 (0.34 to 4.79) | |
| Latina | 5 (11.6%) | 38 (88.4%) | 1.05 (0.23 to 4.81) | |
| Other | 2 (18.2%) | 9 (81.2%) | 1.78 (0.25 to 12.45) | |
| Age at first intercourse | ||||
| <15 | 17 (16.5%) | 86 (83.5%) | 2.06 (0.81 to 5.24) | NI |
| ≥15 | 7 (8.8%) | 73 (91.2%) | 1.0 | |
| Lifetime number of sex partners | ||||
| 1–3 | 6 (11.1%) | 48 (88.9%) | 1.0 | NI |
| 4–7 | 8 (11.8%) | 60 (88.2%) | 1.07 (0.35 to 3.28) | |
| ≥8 | 10 (16.4%) | 51 (83.6%) | 1.57 (0.53 to 4.65) | |
| Sex partners in past 3 months | ||||
| ≤1 | 15 (12.4%) | 106 (87.6%) | 1.0 | NI |
| ≥2 | 9 (14.5%) | 53 (85.5%) | 1.20 (0.49 to 2.92) | |
| Previous STI diagnosis | ||||
| Yes | 15 (14.3%) | 90 (85.7%) | 1.28 (0.53 to 3.10) | NI |
| No | 9 (11.5%) | 69 (88.5%) | 1.0 | |
| Reason for clinic visit at time of current diagnosis | ||||
| STI-related symptoms or concern | 12 (16.2%) | 62 (83.8%) | 1.56 (0.66 to 3.70) | NI |
| Other | 12 (11.0%) | 97 (89.0%) | 1.0 | |
| Post-diagnosis behaviours and repeat diagnoses | ||||
| Sexual activity during follow-up period | ||||
| Yes | 22 (14.3%) | 132 (85.7%) | 2.25 (0.50 to 10.14) | NI |
| No | 2 (6.9%) | 27 (93.1%) | 1.0 | |
| Any sex without a condom during follow-up period | ||||
| Yes | 12 (16.7%) | 60 (83.3%) | 1.65 (0.70 to 3.91) | NI |
| No | 12 (10.8%) | 99 (89.2%) | 1.0 | |
| New sex partner during follow-up period | ||||
| Yes | 12 (17.6%) | 56 (82.4%) | 1.84 (0.78 to 4.36) | NI |
| No | 12 (10.4%) | 103 (89.6%) | 1.0 | |
| Continued sex with a baseline partner not known to be treated | ||||
| Yes | 10 (26.3%) | 28 (73.7%) | 3.34 (1.35 to 8.29) | 3.37 (1.33 to 8.57) |
| No | 14 (9.7%) | 131 (90.3%) | 1.0 | 1.0 |
| Sex with a partner not known to be monogamous | ||||
| Yes | 7 (11.1%) | 56 (88.9%) | 1.0 | NI |
| No | 17 (14.2%) | 103 (85.8%) | 1.32 (0.52 to 3.38) | |