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Table 2 GDM risk factors according to disease status and Odds Ratios (ORs) in two cohorts

From: Nomogram for prediction of gestational diabetes mellitus in urban, Chinese, pregnant women

Variables

Exploratory cohort (n = 3956)

External validation cohort (n = 6572)

Crude OR (95% CI)

Adjusted OR (95%CI)

P

Crude OR (95% CI)

Adjusted OR (95%CI)

P

Age, years

1.11 (1.08–1.14)

1.09 (1.06–1.11)

< 0.0001

1.12 (1.09–1.14)

1.01 (1.07–1.12)

< 0.0001

Pre-BMI, kg/m2

1.18 (1.14–1.22)

1.13 (1.09–1.17)

< 0.0001

1.17 (1.13–1.21)

1.11 (1.08–1.15)

< 0.0001

Family history

1.89 (1.57–2.26)

1.64 (1.36–1.98)

< 0.0001

2.19 (1.81–2.66)

1.93 (1.58–2.35)

< 0.0001

FPG

3.28 (2.62–4.11)

2.60 (2.07–3.27)

< 0.0001

3.47 (2.77–4.34)

2.77 (2.20–3.48)

< 0.0001

parity

1.49 (1.22–1.81)

1.14 (0.91–1.43)

0.266

1.32 (1.12–1.56)

0.89 (0.74–1.07)

0.216

  1. Based on multiple logistic regression models adjusted mutually
  2. OR odds ratio, pre-BMI pre-pregnancy body mass index, FPG fasting plasma glucose