Description of the study sample in terms of categorical data, and assessments of association of chlamydia diagnosis with the other variables presented
| Categorical data | Count [n, (% of n)] | Number infected (% of row count) | Significance | OR (95% CI) |
|---|---|---|---|---|
| Chlamydia (n=115) | ||||
| Positive | 60 (52%) | |||
| Negative | 55 (48%) | |||
| Gender (n=115) | ||||
| Male* | 96 (83%) | 49 (51%) | p=0.58 | 1 |
| Female | 19 (17%) | 11 (58%) | 1.14 (0.74–1.75) | |
| Ethnicity (n=107) | ||||
| White Caucasian* | 93 (86%) | 46 (50%) | p=0.59 | 1 |
| Other | 14 (14%) | 8 (57%) | 1.15 (0.70–1.89) | |
| Sexual orientation (n=109) | ||||
| Heterosexual | 104 (95%) | 55 (53%) | p=0.67† | 1.32 (0.45–3.93) |
| MSM/WSW* | 5 (5%) | 2 (40%) | 1 | |
| Symptoms (n=113) | ||||
| Yes | 28 (25%) | 17 (61%) | p=0.30 | 1.28 (0.90–1.85) |
| No* | 85 (75%) | 42 (49%) | 1 | |
| SI with infected partner (n=112) | ||||
| Once* | 22 (20%) | 7 (32%) | p=0.03 | 1 |
| More than once | 90 (80%) | 53 (59%) | 1.79 (0.95–3.39) | |
| Antibiotic use within the last 3 months (n=115) | ||||
| Yes* | 20 (17%) | 13 (65%) | p=0.21 | 1 |
| No | 95 (83%) | 47 (50%) | 1.32 (0.90–1.92) | |
| Previous history of chlamydia (n=114) | ||||
| Yes* | 28 (25%) | 10 (36%) | p=0.05 | 1 |
| No | 86 (75%) | 49 (57%) | 1.60 (0.94–2.71) | |
| History of other STIs (n=114) | ||||
| Yes* | 5 (5%) | 2 (40%) | p=0.66† | 1 |
| No | 109 (95%) | 58 (53%) | 1.33 (0.45–3.95) | |
| History of serious illness (n=115) | ||||
| Yes* | 5 (4%) | 1 (20%) | p=0.20† | 1 |
| No | 110 (96%) | 59 (54%) | 2.68 (0.46–15.61) | |
| Consistent condom use (n=115) | ||||
| Yes* | 17 (15%) | 7(41%) | p=0.33 | 1 |
| No | 98 (85%) | 53 (54%) | 1.31 (0.72–2.38) | |
| Contraception (n=115)‡ | ||||
| Condoms | 95 (83%) | 51(53.7%) | ||
| Hormonal | 16 (84%)§ | 11 (69%) | ||
| IUD/IUS | 1 (5%)§ | 0 | ||
| None | 13 (11%) | 5 (39%) | ||
↵* Reference category.
↵† Fisher's exact test.
↵‡ Some individuals used more than one method of contraception.
↵§ As a percentage of the female cohort.
IUD, intrauterine device; IUS, intrauterine system; MSM, men who have sex with men; OR, odds ratio; SI, sexual intercourse; STI, sexually transmitted infection; WSW, women who have sex with women.