Table 1 Baseline data for group with stillbirths (78 women, 79 babies) and the group with live births (n = 28,584)

 Age (years)

0.73

 BMI^b

0.03

 Smokers^c

1.68 (0.65–4.39)

 History of psychiatric comorbidity

0.91 (0.49–1.68)

 In vitro fertilization

0.78 (0.29–2.02)

 Nullipara

0.58 (0.39–0.85)

 Duplex

2.06 (0.88–4.83)

 At least one previous miscarriage

1.42 (1.05–1.94)

 Complications of pregnancy^d

1.75 (0.94–3.24)

 Living with the father of the child

0.84 (0.75–0.94)

 Single mother

2.59 (0.99–6.77)

 Education: more than 3 years postsecondary

0.77 (0.57–1.03)

 Working fulltime

0.58 (0.44–0.75)

 Sweden

0.58 (0.45–0.75)

 Asia

1.16 (0.74–1.80)

 Africa

2.43 (1.53–3.87)

 Spontaneous

< 0.01

 Induced

 Caesarean (ES + AS)

 Spontaneous vaginal

0.34

 Vacuum

 Caesarean (ES + AS)

 Gestational age (days)

< 0.01

 22–32 weeks of gestation

39.4 (29.87–52.08)

 Term pregnancies

0.38 (0.28–0.51)

 Birth weight (g)

< 0.01

 Length (cm)

< 0.01

 Female gender

1.04 (0.85–1.28)

 Malformations

2.05 (0.95–4.46)

 Small for gestational age

10.3 (7.88–13.46)