Table 3 Multinomial logistic regression analysis of the associations between mid-pregnancy glucose status and specific congenital heart defect subtypes

GDM

 No

265 (0.5)

1 (Ref)

112 (0.2)

1 (Ref)

 Yes

118 (0.8)

1.48 (1.18 ~ 1.84)

0.001

38 (0.2)

1.25 (0.86 ~ 1.82)

0.242

OGTT 0 h

  < 5.1 mmol/L

331 (0.5)

1 (Ref)

129 (0.2)

1 (Ref)

  ≥ 5.1 mmol/L

52 (0.7)

1.32 (0.98 ~ 1.77)

0.069

21 (0.3)

1.47 (0.93 ~ 2.35)

0.102

OGTT 1 h

  < 10 mmol/L

318 (0.5)

1 (Ref)

138 (0.2)

1 (Ref)

  ≥ 10 mmol/L

65 (0.9)

1.6 (1.22 ~ 2.11)

0.001

12 (0.2)

0.77 (0.42 ~ 1.4)

0.388

OGTT 2 h

  < 8.5 mmol/L

331 (0.5)

1 (Ref)

129 (0.2)

1 (Ref)

  ≥ 8.5 mmol/L

52 (0.8)

1.33 (0.99 ~ 1.8)

0.061

21 (0.3)

1.63 (1.02 ~ 2.62)

0.041

OGTT status^b

 Group 1

265 (0.5)

1 (Ref)

112 (0.2)

1 (Ref)

 Group 2

30 (0.6)

1.21 (0.83 ~ 1.77)

0.333

14 (0.3)

1.39 (0.8 ~ 2.43)

0.247

 Group 3

66 (0.8)

1.53 (1.16 ~ 2.01)

0.003

17 (0.2)

1.05 (0.63 ~ 1.76)

0.858

 Group 4

22 (1.1)

1.91 (1.23 ~ 2.99)

0.004

7 (0.4)

1.72 (0.79 ~ 3.74)

0.169

P for trend

 < 0.001

0.257