Table 1 Characteristics of the participants at the German and Swiss hospitals

Age

n

128

77

51

Mean

Years

30.30

29.32

31.78

t-test = −2.94

p < 0.01*

Range

16 - 43

16-43

22-40

SD

4.78

5.13

3.78

Primiparous

n

129

77

52

% (n)

55.8 (72)

62.3 (48)

46.2 (24)

χ² = 3.30 df = 1

p = 0.07

Length of labour including unplanned c-section

n

100

64

36

Mean

Hours

9.40

11.00

6.56

t-test = 2.72

p < 0.01*

Range

0.25 - 72.00

0.25 - 72.00

0.25 - 28.00

SD

9.43

10.73

5.57

Length of labour only vaginal births

n

86

57

29

Mean

Hours

9.11

10.60

6.19

t-test = 2.44

p = 0.02*

Range

0.25 - 72.00

0.25 - 72.00

0.25 - 28.00

SD

9.86

11.19

5.58

Mode of birth

n

128

76

52

Vaginal birth

% (n)

67.2 (86)

75.0 (57)

55.8 (29)

χ² = 5.18

p = 0.02*

Caesarean section

% (n)

32.8 (42)

25.0 (19)

44.2 (23)

df = 1