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Table 1 Demographic characteristics

From: A prospective, double-blinded cohort study using quantitative fetal fibronectin testing in symptomatic women for the prediction of spontaneous preterm delivery

 

Total

n = 48

PTB

n = 10

Term delivery n = 38

p-value

Maternal age (IQR)

35 (5)

34 (6)

35 (5)

0.31

BMI at booking visit, median (IQR)

21.5 (3.6)

20.7(3.8)

21.9(4.6)

0.28

Gestational age of PTB symptoms (weeks),median(IQR)

29.2 (3.8)

30.7

28.9

0.82

Ethnicity

0.11

Chinese

45(94%)

8 (80%)

37 (97%)

 

Japanese

1(2%)

0

1 (3%)

 

Caucasian

2(4%)

2 (20%)

0

 

Obstetric history

0.006

Nulliparous

32(67%)

3 (30%)

29 (76%)

 

Multiparous

16(33%)

7(70%)

9(24%)

 

History of PTB

0.13

Without a history of PTB

44(92%)

8 (80%)

36(95%)

 

With a history of PTB

4(8%)

2 (20%)

2 (5%)

 

Mode of delivery

0.57

Vaginal

23(48%)

4 (40%)

19 (50%)

 

Caesarean section

25(52%)

6 (60%)

19 (50%)

 

Delivery

< 24 h from testing

4(8%)

4 (40%)

0

 

< 48 h from testing

1(2%)

1 (10%)

0

 

< 7 days from testing

2(4%)

2 (20%)

0

 

< 14 days from testing

0

0

0

 

> 14 days from testing

41(86%)

3 (30%)

38 (100%)

 

Gestation at delivery

< 34 weeks

6(13%)

6 (60%)

0

 

34–37 weeks

4(8%)

4 (40%)

0

 

> 37 weeks

38(79%)

0

38 (100%)

 

Tocolysis use

0.001

Yes

21(44%)

9 (90%)

12 (32%)

 

No

27(56%)

1 (10%)

26 (68%)

 

Corticosteroid use

0.001

Yes

21(44%)

9 (90%)

12 (32%)

 

No

27(56%)

1 (10%)

26 (68%)

 
  1. BMI: body mass index; IQR: interquartile range; PTB: preterm birth