Analysis of Pregnancy Outcomes Using the New IADPSG Recommendation Compared with the Carpenter and Coustan Criteria in an Area with a Low Prevalence of Gestational Diabetes

Table 2

Differences in oral glucose tolerance tests results between the new GDM group, the old GDM group, and NGT group.

Mean plasma glucose mg/dL (SD)	New GDM; Group 1	P; 1 versus 2	Old GDM; Group 2	P; 2 versus 3	NGT; Group 3	P; 1 versus 3
N (%)	160 (2.4)		222 (3.3)		6345 (94.3)
0 min	85.6 (10.8)	<0.001	92.0 (18.1)	<0.001	77.8 (6.1)	<0.001
60 min	164.2 (28.0)	<0.001	191.3 (32.8)	<0.001	133.9 (23.3)	<0.001
120 min	147.1 (25.9)	<0.001	180.1 (31.2)	<0.001	119.6 (19.8)	<0.001

GDM: gestational diabetes; new GDM group: prior classified normal by old criteria and now GDM according to the new IADPSG criteria; old GDM group: classified GDM according to Carpenter and Coustan criteria (old criteria); NGT: normal glucose tolerance; SD: standard deviation.