Characteristics of the study participants, total and stratified by chlamydia tests (CT) lab result (n=600)
| Result for CTs | ||||
|---|---|---|---|---|
| Total sample (n=600) | Positive (n=60) | Negative (n=540) | p Value* | |
| Characteristic | n (%) | n (%) | n (%) | |
| Age in years | 27 (21–32)† | 23 (20–38) | 27 (22–33) | <0.05 |
| Age categorised | ||||
| 1st tertile (16–23) | 212 (35.3) | 33 (15.6) | 179 (84.4) | <0.05 |
| 2nd tertile (24–30) | 196 (32.7) | 17 (8.7) | 179 (91.3) | |
| 3rd tertile (31–47) | 192 (32.0) | 10 (5.2) | 182 (94.8) | |
| Education | ||||
| None/elementary | 26 (4.3) | 4 (15.4) | 22 (84.6) | 0.58 |
| Some high school | 363 (60.5) | 37 (10.2) | 326 (89.8) | |
| Some university/tech | 211 (35.2) | 19 (9.0) | 192 (91.0) | |
| Partnership status | ||||
| Single/separated/widowed | 116 (19.3) | 20 (17.2) | 96 (82.8) | <0.05 |
| Married/cohabitating | 484 (80.7) | 40 (8.3) | 444 (91.7) | |
| Parity | ||||
| First pregnancy | 218 (36.3) | 27 (12.4) | 191 (87.6) | 0.14 |
| > Second pregnancy | 382 (63.7) | 33 (8.6) | 349 (91.4) | |
| Gestational age in weeks | ||||
| First trimester (1–12) | 94 (15.7) | 11 (11.7) | 83 (88.3) | 0.60 |
| Second trimester (13–27) | 182 (30.3) | 15 (8.2) | 167 (91.8) | |
| Third trimester (28 and over) | 324 (54.0) | 34 (10.5) | 290 (89.5) | |
| Sexual history | ||||
| Age at first intercourse | 18 (16–19)† | 17 (16–19) | 18 (16–19) | 0.10 |
| Lifetime number of partners | 2 (1–3)† | 2 (1–3) | 2 (1.3) | 0.66 |
| Prior diagnosis of syphilis | 9 (1.5) | 0 (0.0) | 9 (100.0) | 0.10 |
| Prior diagnosis of HIV | 3 (0.5) | 0 (0.0) | 3 (100.0) | 0.07 |
| Condom use in last encounter | 30 (5.0) | 3 (10.0) | 27 (90.0) | 0.95 |
| STD symptoms (current)‡ | ||||
| Vaginal discharge | 524 (87.3) | 52 (9.9) | 472 (90.1) | 0.87 |
| Genital wart | 36 (6.0) | 3 (8.3) | 33 (91.7) | 0.69 |
| Genital ulcer | 26 (4.3) | 2 (7.7) | 24 (92.3) | 0.73 |
| None | 71 (11.8) | 8 (11.3) | 63 (88.7) | 0.95 |
| Positive for CT (test used in study) | 60 (10.0) | 60 (100.0) | 0 (0.0) | NA |
| Positive for syphilis (chart review) | 8 (1.3) | 0 (0.0) | 8 (100.0) | 0.18 |
| Positive for HIV (chart review) | 3 (0.5) | 0 (0.0) | 3 (100.0) | 0.69 |
For the total sample column, percentages are displayed along the column.
For the stratified analysis, percentages are displayed along the row.
*χ2 test except for numeric variables marked with ‘†’ where Mann–Whitney test was used.
†Median (IQR).
‡Could report more than 1 concurrent symptom.
NA, not applicable.