Table 3 Factors associated with adverse perinatal outcomes (APO)

Migration background: ref = Western

1

1

 Non-Western

1.51 (0.78–2.95)

0.22

Education: ref = high

1

1

 Middle

1.72 (0.89–3.30)

0.1

1.44 (0.71–2.89)

0.31

 Low

4.16 (1.54–11.22)

0.005

3.36 (1.12–10.09)

0.03

Marital status: ref = married/living together

1

 Single or not living with partner

2.11 (0.98–4.53)

0.06

Duration relation: ref =  ≥ 5 years

1

1

 0–4 years

2.82 (1.50–5.30)

0.001

2.75 (1.41–5.39)

0.003

Pain in lower abdomen: ref = no

1

 Yes

1.72 (0.94–3.15)

0.08

Blood loss during or after sex: ref = no

1

 Yes

0.24 (0.03–1.81)

0.17

Antibiotic < 3 months: ref = no

1

 Yes

0.23 (0.03–1.71)

0.15

BMI: ref = 18.5–25

1

 < 18.5

2.33 (0.81–6.71)

0.12

 25–30

0.83 (0.35–1.96)

0.67

 ≥ 30

1.53 (0.55–4.25)

0.42

Complications previous newborn: ref = no

1

1

 Yes, 1 or more

7.92 (2.74–22.90)

0.001

10.49 (3.21–34.25)

0.0001

Nr sex partners < 12 months: ref = 0–1

1

 2 or more

2.32 (0.74–7.31)

0.15

Current STI: ref = no

1

 Yes, 1 or more

0.88 (0.11–7.09)

0.9

History of STI: ref = no

1

 Yes, 1 or more

1.46 (0.69–3.08)

0.32