PTD at < 34 weeks (N = 13)

Delivery at ≥ 34 weeks (N = 60)

(N = 73)

p -value

Age (years old)

32 (27 - 40)

31 (20 - 39)

0.171

Nullipara (%)

46.1 (6/13)

36.7 (22/60)

0.524

History of SPTB (%)

57.1 (4/7)

15.8 (6/38)

0.016

Prepregnancy BMI

20.2 (17.4 - 34.0)

22.3 (17.0 - 35.5)

0.820

Smoking (%)

0 (0/13)

6.7 (4/60)

0.338

GW on admission

21 (19 - 26)

25 (16 - 28)

0.005

MBT (˚C)

36.8 (35.9 - 37.4)

36.9 (35.6 - 37.6)

0.487

WBC (/mm³)

8840 (4800 - 11,930)

9260 (4600 - 15,640)

0.320

CRP (mg/dL)

0.2 (0.1 - 0.5)

0.1 (0.1 - 1.6)

0.454

CL on admission (mm)

13 (5 - 24)

17 (5 - 25)

0.009

Nugent score (points)

1 (0 - 8)

0 (0 - 9)

0.553

fFN in VS (ng/mL)

41 (4 - 145)

14 (0 - 873)

0.133

CM-IL-8 (ng/mL)

803.5 (26.9 - 2785.9)

154.8 (1.9 - 2229.5)

0.011

AF-IL-8 (ng/mL)

6.4 (0.3 - 138)

2.2 (0.1 - 30.8)

0.029

AF-glucose (mg/dL)

38 (19 - 84)

42 (10 - 127)

0.366

AF-WBC (/mL)

6000 (800 - 49,000)

5000 (500 - 100,000)

0.302

AF-microbes by culture (%)

7.7 (1/13)

1.7 (1/60)

0.227

Tocolysis (%)

100 (13/13)

60.0 (36/60)

0.005

Cerclage (%)

69.2 (9/13)

53.3 (32/60)

0.295

GW at birth

27 (21 - 33)

37 (34 - 40)

<0.001

neonatal BW (g)

1158 (326 - 2249)

2966 (1916 - 3680)

<0.001

Still birth (%)

23.1 (3/13)

0 (0/60)

<0.001

APS (1 min) (points)

6 (3 - 8)

9 (5 - 9)

0.001

APS (5 min) (points)

8 (5 - 9)

9 (9 - 10)

0.002

Admission at NICU (%)

100 (10/10)

10.0 (6/60)

<0.001