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Table 1 Serum progesterone and maternal characteristics at baseline, for low risk and high risk women with threatened miscarriage

From: Serum progesterone distribution in normal pregnancies compared to pregnancies complicated by threatened miscarriage from 5 to 13 weeks gestation: a prospective cohort study

Variable

Normal Pregnancy [NP] Cohort (n=450)

Threatened Miscarriage [TM] Cohort (n=479)

p-value

Demographics

 Maternal Age (yr)

30.9 (4.0)a

30.6 (4.5)

0.058

 Gestational Age (wk)

8.4 (2.1)

7.3 (1.4)

<0.0001

 Body mass index

22.9 (4.2)

23.1 (4.6)

0.459

 Previous Miscarriage (%)

18.7

23.0

0.107

 Diabetes mellitus (%)

0.21

0.23

1.000

 Smoking (%)

2.93

4.59

0.322

Outcome measures

 Serum Progesterone (nmol/L)

71.8 (27.2)

53.6 (25.2)

<0.0001

 Miscarriage rate (%)

5.4

21.5

<0.0001

  1. aMean (SD)