Factor | Crude OR (95% CI) | p-value | Adjusted ORa (95% CI) | p-value |
---|---|---|---|---|
Age group: ref =  ≥ 21 years | 1 |  | 1 |  |
 ≤ 20 years | 8.05 (2.33–27.75) | 0.001 | 6.52 (1.11–38.33) | 0.04 |
Migration background: ref = Western | 1 |  |  |  |
 Non-Western | 5.09 (1.58–16.33) | 0.006 |  |  |
Migration background partner: ref = Western | 1 |  |  |  |
 Non-Western | 9.84 (2.56—37.72) | 0.001 | 9.34 (2.34–37.21) | 0.002 |
Education: ref = high | 1 |  |  |  |
 Low/middleb | 3.23 (0.86–12.06) | 0.08 |  |  |
Education partner: ref = high | 1 |  |  |  |
 Low/middleb | 3.79 (0.81–17.70) | 0.09 | ||
Marital status: ref = married/living together | 1 |  |  |  |
Single or partner not living together | 4.98 (1.54–16.15) | 0.008 |  |  |
Duration relation: ref =  ≤ 5 years | 1 |  | ||
 0–4 years | 3.79 (0.97–14.83) | 0.06 | ||
Age at sexual debut: ref = 18 +  | 1 |  |  |  |
 < 18 | 4.65 (0.60–36.35) | 0.14 | ||
New sex partner < 3 months: ref = no | 1 |  |  |  |
 Yes | 7.73 (0.86–69.71) | 0.07 |  |  |
Nr sex partners < 12 months: ref = 0–1 | 1 |  |  |  |
 Two or more | 12.10 (3.36–43.56) | 0.0001 | 9.88 (2.08–46.91) | 0.004 |
Vaginal discharge: ref = no | 1 |  |  |  |
 Yes | 0.32 (0.07–1.49) | 0.15 | ||
Pain or burning sensation when urinating: ref = no | 1 |  | ||
 Yes | 3.23 (0.85–12.33) | 0.09 | ||
History of STI: ref = not tested or no STI | 1 |  |  |  |
 1 or more STI | 7.05 (2.31–21.53) | 0.001 | ||
Partner history of STI: ref = not tested or no STI | 1 |  | ||
 1 or more STI | 3.35 (0.89–12.61) | 0.07 | ||
Smoking: ref = no never or not during pregnancy | 1 |  |  |  |
 Yes during pregnancy | 3.54 (1.12–11.20) | 0.03 | ||
Partner smoking: ref = no never or not during pregnancy | 1 |  | ||
 Yes during pregnancy | 3.54 (0.93–13.45) | 0.06 | ||
Drug use: ref = no never or not during pregnancy | 1 |  | ||
 Yes during pregnancy | 4.71 (0.97–22.88) | 0.05 | ||
Partner using drugs: ref = no never or not during pregnancy | 1 |  | ||
 Yes during pregnancy | 7.09 (1.53–32.92) | 0.01 | ||
Pregnancy planned: ref = yes | 1 |  | ||
 No | 3.85 (1.20–12.35) | 0.02 | ||
Antibiotic < 3 months: ref = no | 1 |  | ||
 Yes | 5.70 (1.65–19.72) | 0.006 |