Risk factors associated with the development of postpartum diabetes in Japanese women with gestational diabetes

Table 4 The association between the predictive variables and the postpartum development of diabetes in a univariate logistic regression analysis

Predictive Variables	Chi-square	P value
Maternal age (years)	2.15	0.14
Nulliparous (%)	1.47	0.22
Family history of diabetes (%)	0.0	0.99
Pre-pregnancy BMI (kg/m²)	8.13	0.0044
Pre-pregnancy BMI ≥25 kg/m²	8.77	0.0031
GA at OGTT (weeks)	0.13	0.71
JSOG criteria period^a	0.19	0.66
OGTT results during pregnancy
Fasting PG (mg/dl)	2.82	0.093
1-h PG (mg/dl)	3.66	0.056
2-h PG (mg/dl)	5.76	0.016
HbA1c (%) (n = 269)	16.3	<0.0001
Insulin therapy in pregnancy (%)	8.75	0.0031
Weight gain during pregnancy (kg)	0.13	0.72
Follow-up period (weeks)	0.74	0.39

BMI body mass index, GA gestational age, OGTT oral glucose tolerance test, JSOG, Japan Society of Obstetrics and Gynecology, PG plasma glucose
^aadjusted for the follow-up period

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