Table 1 Clinical characteristics of pregnant women in this study.

From: Machine learning approaches to predict gestational age in normal and complicated pregnancies via urinary metabolomics analysis

Variable

Healthy (n = 187)

HDP (n = 23)

p-value*

SPTB (n = 14)

p-value*

Age at 40th gestational week, years

32.7 (± 4.8)

35.5 (± 6.1)

0.045

34.1 (± 4.9)

0.33

Pre-pregnancy body mass index, kg/m2

22.2 (± 4.7)

22.4 (± 3.6)

0.78

21.4 (± 4.0)

0.50

Parity

51%

39%

0.38

57%

0.78

Gestational age at delivery, weeks

38.6 (± 1.2)

37.5 (± 2.0)

0.017

35.1 (± 1.4)

 < 0.0001

  1. *Categorical or continuous variables were compared between the healthy group and either HDP or SPTB groups using Fisher's exact test or Welch’s t-test, respectively. Regarding gestational age at delivery, significant differences (p < 0.05) were observed using the Mann–Whitney U test. Data are presented as the mean ± S.D.
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