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Table 2 An overview of the diagnostic criteria of the OGTT used for GDM before 24 weeks of pregnancy and for GDM ≥ 24 weeks of pregnancy

From: Screening for pregestational and gestational diabetes in pregnancy: a survey of obstetrical centers in the northern part of Belgium

Diagnostic criteria

GDM < 24 weeks

GDM ≥ 24 weeks

 

(n = 25)

(n = 45)

75 g OGTT

  

Carpenter & Coustan

20% (5)

9% (4)

WHO

0

2% (1)

IADPSG

28% (7)

33% (15)

100 g OGTT

  

Carpenter & Coustan

48% (12)

52% (23)

NDDG

4% (1)

4% (2)

  1. GDM: gestational diabetes; OGTT: oral glucose tolerance test; WHO: World Health Association; IADPSG: International Association of Diabetes in Pregnancy Study Groups; NDDG: National Diabetes Data Group.