Demographic and behavioural predictors of C trachomatis infection by exposure to C trachomatis status among clients at the sexually transmitted disease clinic in New Haven, CT, 2000–2
| Characteristics | Unknown exposure to C trachomatis (n = 1303) | Known exposure to C trachomatis (n = 152) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No | C trachomatis+ No (%) | Crude OR* | 95% CI | Adjusted OR† | 95% CI | No | C trachomatis+ No (%) | Crude OR | 95% CI | Adjusted OR† | 95% CI | |
| *Odds ratio. | ||||||||||||
| †Odds ratio adjusted for all variables in the table. | ||||||||||||
| Condom use | ||||||||||||
| Consistent | 390 | 40 (10.3) | 1.21 | 0.81 to 1.80 | 1.34 | 0.85 to 2.11 | 30 | 4 (13.3) | 0.29 | 0.10 to 0.89 | 0.10 | 0.01 to 0.83 |
| Inconsistent | 913 | 79 (8.7) | 1 | 1 | 122 | 42 (34.4) | 1 | 1 | ||||
| Age (years) | ||||||||||||
| ⩽25 | 483 | 62 (12.8) | 1.97 | 1.35 to 2.88 | 2.04 | 1.30 to 3.20 | 84 | 33 (39.3) | 2.74 | 1.30 to 5.77 | 3.33 | 1.19 to 9.32 |
| >25 | 819 | 57 (7.0) | 1 | 1 | 68 | 13 (19.1) | 1 | 1 | ||||
| Sex/orientation | ||||||||||||
| Female | 342 | 18 (5.0) | 1 | 1 | 25 | 5 (20.0) | 1 | 1 | ||||
| Heterosexual male | 873 | 99 (10.8) | 2.31 | 1.37 to 3.87 | 2.61 | 1.38 to 4.96 | 126 | 41 (32.5) | 1.93 | 0.68 to 5.51 | 1.13 | 0.28 to 4.54 |
| MSM | 88 | 3 (3.1) | 0.61 | 0.17 to 2.10 | 1.44 | 0.37 to 5.59 | 1 | 0 (0.0) | — | — | — | — |
| Race/ethnicity | ||||||||||||
| White | 361 | 19 (5.3) | 1 | 1 | 14 | 4 (28.6) | 1 | 1 | ||||
| African-American | 780 | 88 (11.3) | 2.29 | 1.37 to 3.82 | 2.01 | 1.01 to 4.03 | 103 | 31 (30.1) | 1.08 | 0.31 to 3.70 | 0.83 | 0.11 to 6.10 |
| Hispanic | 118 | 8 (6.8) | 1.31 | 0.56 to 3.07 | 0.60 | 0.12 to 2.86 | 31 | 11 (35.5) | 1.37 | 0.35 to 5.43 | 0.61 | 0.07 to 5.56 |
| Other | 41 | 4 (9.8) | 2.0 | 0.65 to 6.20 | 2.72 | 0.68 to 10.82 | 3 | 0 (0) | — | — | — | — |
| Marital status | ||||||||||||
| Unmarried | 1155 | 110 (9.5) | 1.44 | 0.71 to 2.91 | 1.65 | 0.63 to 4.30 | 139 | 44 (31.7) | 2.55 | 0.54 to 11.98 | 0.78 | 0.07 to 9.11 |
| Married | 132 | 9 (6.8) | 1 | 1 | 13 | 2 (15.4) | 1 | 1 | ||||
| Number partners in the past 3 months | ||||||||||||
| >1 | 602 | 61 (10.1) | 1.24 | 0.85 to 1.81 | 0.95 | 0.60 to 1.52 | 72 | 24 (33.3) | 1.29 | 0.65 to 2.59 | 1.60 | 0.56 to 4.56 |
| 1 | 671 | 56 (8.3) | 1 | 1 | 79 | 22 (27.9) | 1 | 1 | ||||
| STI history | ||||||||||||
| Yes | 585 | 61 (10.4) | 1.44 | 0.92 to 2.24 | 1.41 | 0.88 to 2.27 | 53 | 15 (28.3) | 1.05 | 0.45 to 2.44 | 0.69 | 0.26 to 1.82 |
| No | 441 | 33 (7.5) | 1 | 1 | 55 | 15 (27.3) | 1 | 1 | ||||
| Symptoms | ||||||||||||
| Yes | 271 | 38 (14) | 1.92 | 1.27 to 2.89 | 1.47 | 0.90 to 2.38 | 27 | 9 (33.3) | 1.19 | 0.49 to 2.89 | 1.15 | 0.31 to 4.24 |
| No | 1032 | 81 (7.8) | 1 | 1 | 125 | 37 (29.6) | 1 | 1 | ||||