Percent (%)

Patients (n)

Characteristics

Maternal age (years)

9.1%

36

<20

29.6%

117

20 - 25

34.2%

135

26 - 30

27.1%

107

>30

Gestational age (weeks)

11.1%

44

34 - 35

12.7%

50

35 - 36

14.4%

57

36 - 37

15.4%

61

37 - 38

16.3%

64

38 - 39

16.4%

65

39 - 40

13.7%

54

40

Parity

22.3%

88

Nulliparous

77.7%

307

Multiparous