Maternal

Oxytocin

No (n = 20)

Oxytocin

Yes (n = 56)

p-value*

Total

(n = 76)

Maternal age (years)

30

(20 - 39)

30

(21 - 39)

0.9

30

(20 - 39)

BMI**

22

(19 - 27)

23

(18 - 29)

0.2

22.6

(17.5 - 28.5)

Smoking (%)

1

(5.0)

2

(3.6)

0.6

3

(4.0)

Education; university (yes, %)

13 (65)

32 (57.1)

0.5

45

(59.2)

Psychiatric Contact (%)

5

(25.0)

11

(19.6)

0.4

16

(21.0)

Foetal

Gestational age

40

(37 - 41)

40

(37 - 42)

0.9

40

(37 - 42)

Fetal Weight (g)*

3600

(2740 - 4540)

3480

(2555 - 4975)

0.7

3527

(2555 - 4975)

Fetal Length (cm)

51

(45 - 56)

51

(47 - 55)

0.8

50.8

(45 - 56)

Head circumference (cm)

34.8

(31 - 37)

35

(32 - 38)

0.8

34.7

(31 - 38)

Gender (boy, %)

9

(45.0)

27

(48.0)

0.5

36

(47.4)

Delivery data

Labor start (%)

Spontaneous

Induction

18 (90)

2 (10)

52 (93)

4 (7)

0.7

70 (92)

6 (8)

Labor end (%) Spontaneous Vaginal Vacuum Acute caesarean section

18 (90)

1 (5) 1 (5)

46 (82)

6 (11) 4 (7)

0.7

64 (84)

7 (9) 5 (7)

Latent phase (h)

3.3

(0 - 41)

7.0

(0 - 65)

0.03*

6.5

(0 - 65)

Active phase (h)

8.0

(0.5 - 17.0)

6.5

(1.5 - 15.0)

0.1

7.8

(0.5 - 17.0)

Fully dilated until delivery (h)

1.0

(0 - 2.0)

1.5

(0.3 - 5.0)

<0.001*

1.5

(0 - 5)

Epidural (yes)

6 (30)

49 (88)

<0.001*

56 (73)

aPh in cord blood ≤ 7.10 (%)

0

2 (3.6)

0.6

2 (2.6)