N

fFN+, CL+

N = 18

fFN+, CL−

N = 8

fFN−, CL+

N = 46

fFN−, CL−

N = 53

Age

years

125

29 32 34

25 30 33

24 29 35

25 30 32

BMI

kg/m2

125

25 28 31

24 26 28

23 25 30

24 25 28

History of preterm birth

125

5.6% (1)

50.0% (4)

8.7% (4)

9.4% (5)

Parity

125

0

61% (11)

50% (4)

48% (22)

53% (28)

1

22% (4)

12% (1)

35% (16)

28% (15)

>1

17% (3)

38% (3)

17% (8)

19% (10)

Gravidity

125

1

61% (11)

50% (4)

44% (20)

47% (25)

2

17% (3)

12% (1)

17% (8)

24% (13)

>2

22% (4)

38% (3)

39% (18)

28% (15)

Gestation age at hospitalization

day

125

29 + 1 30 + 3 32 + 0

28 + 0 28 + 2 29 + 3

28 + 0 29 + 0 31 + 4

27 + 5 30 + 2 32 + 2

Cervical length

mm

125

7.8 12.0 16.0

27.0 31.5 34.8

11.2 14.0 17.0

25.0 30.0 34.0

Lung maturation

125

94.4% (17)

87.5% (7)

84.8% (39)

35.8% (19)

Gestation age at birth

day

125

34 + 0 35 + 3 37 + 5

35 + 4 37 + 1 38 + 2

36 + 6 38 + 2 39 + 4

37 + 3 38 + 4 40 + 0

Fetal weight at birth

g

125

2195 2840 2998

2569 2735 2995

2869 3170 3400

2870 3130 3500

Days of hospitalization

day

108

0.00 0.00 0.75

0.00 0.00 4.00

5.00 8.00 20.25

1.00 3.00 4.00

Preterm birth before 37 + 0 weeks

125

67% (12)

50% (4)

26% (12)

21% (11)

Preterm birth before 34 + 0 weeks

125

27.8% (5)

12.5% (1)

8.7% (4)

1.9% (1)

Tocolysis

125

100.0% (18)

87.5% (7)

93.5% (43)

71.7% (38)

Vaginal bacterial or yeast colonization

125

44% (8)

25% (2)

30% (14)

43% (23)