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Table 1 Patient demographics for a cross-section of 161 participants

From: The interaction between vaginal microbiota, cervical length, and vaginal progesterone treatment for preterm birth risk

 

Term birth >37 weeks

Preterm birth <37 weeks

Total

n/N (%)

127/161 (79%)

34/161 (21%)

161/161 (100%)

BMI

 Mean ± SD (range)

24.3 ± 4.4 (18–48)

24.3 ± 4.4 (18.4–35)

24.3 ± 4.4 (18–48)

Ethnicity, n/N (%)

 Caucasian

86/127 (68%)

18/34 (53%)

104/161 (65%)

 Asian

22/127 (17%)

5/34 (15%)

27/161 (17%)

 Black

19/127 (15%)

11/34 (32%)*

30/161 (19%)

Smoker, n/N (%)

8/127 (6%)

3/34 (9%)

11/161 (7%)

Gestation at sample (weeks)

 Mean ± SD (range)

17+0 ± 1.0 (13+1–18+4)

16+4 ± 1.4 (12+1–18+4)

16+6 ± 1.1 (12+1–18+4)

Cervical length (mm)

 Mean ± SD (range)

32.5 ± 1.0 (18–50)

30.6 ± 6.4 (10–40)

32 ± 5.6 (10–50)

Intervention n/N (%)

 No intervention

60/127 (47%)

10/32 (29%)

70/161 (43%)

 Cerclage

51/127 (40%)

20/32 (59%)

71/161 (44%)

 Progesterone

16/127 (13%)

4/32 (12%)

20/161 (12%)

Gestation at delivery, n/N (%)

 Early PTB, <34+0 weeks

na

18/34 (53%)

18/161 (11%)

 Late PTB, 34+0 to <37+0 weeks

na

16/34 (47%)

16/161 (10%)

 Term, ≥37+0 weeks

127/127 (100%)

na

127/161 (79%)

  1. PTB preterm birth, na not applicable
  2. *P < 0.05 Fisher’s exact term vs. preterm birth groups