Table 3 Associations with labour and birth outcomes in nulliparous and parous women comparing migrant women with CBD support and Swedish born women

Births to nulliparous women

 Outcome

  Induction of labour

72

19.0

8368

13.6

1.49

1.15–1.93

1.43

1.10–1.86

1.43

1.10–1.86

1.18

0.87–1.58

  Epidural analgesia

107

28.2

26,499

43.1

0.52

0.42–0.65

0.47

0.38–0.59

0.47

0.37–0.59

0.50

0.39–0.64

  Nitrous oxide

281

74.1

50,972

82.9

0.59

0.47–0.74

0.61

0.48–0.77

0.61

0.48–0.77

0.71

0.54–0.92

  Bath

25

6.6

8907

14.5

0.42

0.28–0.63

0.44

0.29–0.66

0.44

0.29–0.66

0.55

0.36–0.85

  Non-instrumental birth

267

70.4

44,108

71.8

0.94

0.75–1.17

0.82

0.65–1.02

0.82

0.65–1.03

0.89

0.69–1.14

  Instrumental vaginal¹

34

9.0

6521

10.6

0.90

0.65–1.26

1.05

0.75–1.47

1.05

0.75–1.47

0.99

0.68–1.43

  Emergency caesarean

67

17.7

7841

12.8

1.47

1.13–1.91

1.62

1.24–2.12

1.61

1.22–2.11

1.43

1.05–1.94

  Perineal injury 3rd and 4th degree

6

1.6

1546

2.5

0.62

0.28–1.40

0.84

0.37–1.88

0.84

0.37–1.88

0.91

0.39–2.16

  Apgarscore < 7 at 5 minutes

9

2.4

1047

1.7

1.40

0.72–2.72

1.40

0.71–2.73

1.41

0.72–2.75

1.28

0.60–2.72

  Hospital stay (mother) after birth > 2 days

206

54.9

30,541

49.8

1.23

1.00-1.51

1.36

1.10–1.67

1.35

1.10–1.67

1.31

1.04–1.64

(n = 500)

(n = 68,247)

Births to parous women

  Induction of labour

89

17.8

7769

11.4

1.69

1.34–2.12

1.45

1.15–1.83

1.28

1.01–1.62

1.04

0.78–1.38

  Epidural analgesia

39

7.8

9940

14.6

0.50

0.36–0.69

0.46

0.33–0.64

0.42

0.30–0.59

0.40

0.28–0.58

  Nitrous oxide

321

64.2

50,413

73.9

0.63

0.53–0.76

0.65

0.54–0.78

0.66

0.55–0.79

0.68

0.54–0.84

  Bath

16

3.2

3790

5.6

0.56

0.34–0.93

0.65

0.39–1.07

0.66

0.40–1.09

0.88

0.50–1.53

  Non-instrumental births^d

428

85.6

57,502

84.3

1.11

0.87–1.43

1.08

0.84–1.40

1.22

0.95–1.58

1.17

0.86–1.58

  Instrumental vaginal¹

11

2.4

1435

2.1

1.21

0.70–2.10

1.30

0.74–2.27

1.28

0.73–2.24

1.38

0.70–2.72

  Emergency caesarean

38

7.6

4147

6.1

1.27

0.91–1.77

1.27

0.91–1.78

1.07

0.76–1.50

0.97

0.64–1.46

  Perineal injury 3rd and 4th degree

5

1.0

578

0.8

1.18

0.49–2.87

1.48

0.61–3.61

1.53

0.63–3.75

2.77

0.95–8.04

  Apgar score < 7 at 5 minutes

8

1.8

694

1.1

1.60

0.79–3.22

1.53

0.75–3.11

1.27

0.62–2.60

1.05

0.45–2.47

  Hospital stay after birth (mother) > 2 days

105

21.1

14,056

20.6

1.03

0.83–1.28

1.08

0.87–1.35

1.00

0.80–1.25

0.95

0-73-1.23