Table 1. Comparison of the characteristics between women who received an OGTT postpartum and women who failed to attend the scheduled OGTT post-partum.

	Women with OGTT postpartum N = 135 (70.7%)	Women without OGTT postpartum N = 56 (29.3%)	p-value
Age (mean)	31.5±4.6	32.2±5.8	0.370
BMI at first prenatal visit (mean)	26.2±5.6	28.6±6.8	0.015
% overweight at first prenatal visit	28.6%	32.1%	0.623
% obese at first prenatal visit	24.8%	35.7%	0.128
% excessive weight gain	33.8%	48.2%	0.063
% EM	25.2%	41.1%	0.029
% smoking before pregnancy	6.7%	17.9%	0.019
% smoking during pregnancy	2.2%	14.3%	0.001
% first degree family member with T2DM	11.9%	19.6%	0.362
% history of GDM	13.3%	16.1%	0.257
% hypertension before pregnancy	10.4%	8.9%	0.762
% prediabetes before pregnancy	5.2%	8.9%	0.181
% multiparous	60.0%	67.9%	0.308
% breastfeeding	77.8%	78.6%	0.904
Week OGTT	27.0(26.0–28.0)	26.5(25.0–28.0)	0.515
% fasting abnormal on the OGTT in pregnancy	45.0%	60.4%	0.059
% ≥2 values abnormal on the OGTT in pregnancy	40.3%	48.1%	0.328
% ≥3 values abnormal in pregnancy	9.3%	18.5%	0.080
% insulin	23.1%	23.2%	0.990
Weeks start insulin (median)	29.0(27.0–30.5)	28.0(20.0–30.5)	0.494

GDM: gestational diabetes; OGTT: oral glucose tolerance test; EM: Ethnic Minority Backgrounds; T2DM: type 2 diabetes; Statistical analyzes: for normally distributed continuous variables the independent samples t-tests were used and chi-squared tests were used for categorical variables. P values in bold are statistical significant.