Table 4 Results of Mann-Whitney-U or Kruskal-Wallis tests

Professional occupation

8

38.201

p < .001

Employed midwife

7.6

1.53

p < .001

0.2

Ob/Gyn consultant

8.8

0.83

Senior Ob/Gyn consultant

8.5

1.47

p = .012

0.2

Numbers of hours worked (per week)

3

14.527

p = .002

< 10 h

7.92

1.24

10–20 h

7.62

1.68

20.5–30 h

7.55

1.37

p = .005

0.1

> 30 h

7.96

1.58

Annual Number of births^a

7

827

p = .132

≤ 500

7.80

1.56

501–1000

7.76

1.55

1001–1500

7.65

1.55

1501–2000

7.66

1.44

2001–2500

7.99

1.65

> 2500

8.18

1.55

Level of care^a

3

823

p = .023

Level I (specialist obstetric and neonatal care)

7.97

1.58

p = .016

0.1

II (regional referral hospital)

7.86

1.59

III (Perinatal Clinic)

7.68

1.52

IV (hospital)

7.63

1.49