Table 1:
baseline demographics of participants
| Participants screened (n = 110)n (%) |
Participants completing study (n = 51)n (%) | ||
|---|---|---|---|
| Age [median (IQR)] | 26 (23-29) | 26 (24-30) | |
| GBS | Positive | 33 (30.0) | 11 (21.6) |
| Negative | 76 (69.1) | 40 (78.4) | |
| Missing | 1 (0.9) | 0 (0.0) | |
| Cigarette smoking | Current | 12 (10.9) | 4 (7.8) |
| Ex-smoker | 16 (14.6) | 6 (11.8) | |
| Never smoker | 80 (72.7) | 40 (78.4) | |
| Missing | 2 (1.8) | 1 (2.0) | |
| Cigarettes per day [median (IQR)] | 2 (1-3) | 1 (1-3) | |
| E-cigarette use | Current | 2 (1.8) | 1 (2.0) |
| Ex-smoker | 2 (1.8) | 0 (0.0) | |
| Never smoker | 104 (94.6) | 49 (96.1) | |
| Missing | 2 (1.8) | 1 (2.0) | |
| Alcohol consumption (drinks/week) | None | 7 (6.4) | 3 (5.9) |
| 1–5 | 78 (70.9) | 38 (74.5) | |
| 6–10 | 22 (20.0) | 9 (17.7) | |
| 11–15 | 1 (0.9) | 1 (2.0) | |
| ≥16 | 0 (0.0) | 0 (0.0) | |
| Missing | 2 (1.8) | 0 (0.0) | |
| Current contraception | Combined oral contraceptive pill | 35 (31.8) | 18 (35.3) |
| Progesterone only pill | 12 (10.9) | 2 (3.9) | |
| Abstinence from sex | 17 (15.5) | 7 (13.7) | |
| Condom/diaphragm | 30 (27.3) | 17 (33.3) | |
| Sex only with other women | 2 (1.8) | 0 (0.0) | |
| Implant | 9 (8.2) | 4 (7.8) | |
| Other | 4 (3.6) | 3 (5.9) | |
| Missing | 1 (0.9) | 0 (0.0) | |
| Chlamydia trachomatis | Positive | 0 (0.0) | 0 (0.0) |
| Negative | 109 (99.1) | 51 (100.0) | |
| Missing | 1 (0.9) | 0 (0.0) | |
| Neisseria gonorrhoea | Positive | 1 (0.9) | 0 (0.0) |
| Negative | 108 (98.2) | 51 (100.0) | |
| Missing | 1 (0.9) | 0 (0.0) | |
| Trichomonas vaginalis | Positive | 0 (0.0) | 0 (0.0) |
| Negative | 109 (99.1) | 51 (100.0) | |
| Missing | 1 (0.9) | 0 (0.0) | |
| Gardnerella vaginalis | Positive | 9 (8.2) | 4 (7.8) |
| Intermediate | 8 (7.3) | 4 (7.8) | |
| Negative | 92 (83.6) | 43 (84.3) | |
| Missing | 1 (0.9) | 0 (0.0) | |
| Candida species | Positive | 6 (5.5) | 3 (5.9) |
| Intermediate | 5 (4.6) | 3 (5.9) | |
| Mild | 10 (9.1) | 1 (2.0) | |
| Negative | 88 (80.0) | 44 (86.3) | |
| Missing | 1 (0.9) | 0 (0.0) | |
| HIV | Positive | 0 (0.0) | 0 (0.0) |
| Negative | 109 (99.1) | 51 (100.0) | |
| Missing | 1 (0.9) | 0 (0.0) | |
| Hepatitis B | Positive | 0 (0.0) | 0 (0.0) |
| Negative | 109 (99.1) | 51 (100.0) | |
| Missing | 1 (0.9) | 0 (0.0) | |
| Hepatitis C | Positive | 0 (0.0) | 0 (0.0) |
| Negative | 109 (99.1) | 51 (100.0) | |
| Missing | 1 (0.9) | 0 (0.0) | |
| Treponema pallidum | Positive | 0 (0.0) | 0 (0.0) |
| Negative | 109 (99.1) | 51 (100.0) | |
| Missing | 1 (0.9) | 0 (0.0) | |
GBS: group B Streptococcus; HIV: human immunodeficiency virus.