Study populationa

(N = 116)

Total populationb

(N = 5633)

Maternal age

years, at birth (SD)

33.5 (4.4)

32.9 (4.6)

Primiparas

%

27.6

29.2

Gestational agec

weeks, at birth (SD)

38.6 (0.94)

38.5 (0.84)

Previous CS

%

45.7

46.9

Blood loss ≥ 1000 ml during CS

%

0

2.5

Birth weight

g (SD)

3527 (504)

3497 (510)

Small for gestational agec (z-score < −2.0)

%

0.9

1.0

Fetal macrosomia (≥4500 g)

%

3.4

3.7

Placenta previa

%

3.4

3.2

Fetal malpresentationd

%

16.4

15.6