Table 1 Demographic and clinical findings.

From: Maternal plasma miRNAs as biomarkers during mid-pregnancy to predict later spontaneous preterm birth: a pilot study

Variable

Preterm Birth 28–32 weeks n = 7

Controls >39 weeks n = 9

P

Ethnicity (% European)*

6 (86%)

8 (89%)

1.0

Age (years)*

29.1 (1.4)

30.8 (0.7)

0.29

Body mass index (kg/m2)*

25.9 (1.5)

24.8 (1.3)

0.59

Primagravid*

4 (57%)

6 (67%)

1.0

Socioeconomic index score*

47 (5.4)

48 (3.8)

0.95

Gestation at sampling

20.1 (0.21)

19.9 (0.23)

0.57

Gestation at delivery (weeks)

31.4 (0.6)

39.8 (0.5)

<0.001

Customized birthweight centile

58.6 (10.3)

44.2 (7.9)

0.28

  1. For analyses, only those with Nanostring results were included; Term controls; n = 9, SPTB n = 7. Data are number (%) or mean (SEM) as appropriate. *Data are collected at 14–16 weeks’ gestation. P values are for comparing between the two groups using Fisher’s Exact Test or Student t-test. Outside of the gestational age at time of delivery, there were no differences in baseline characteristics between the two maternal groups. There were also no differences between the total original cohort assessed (n = 12 per group) and those for which Nanostring data were subsequently available for analysis.
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