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

Table 6 Multiple logistic regression models to investigate the association between the risk factors and the postpartum development of DM: The categorical variable model (n = 269)^a

Variables included in the multivariate models	Model 1			Model 2 ^b
Variables included in the multivariate models	RR	95% CI	P value	RR	95% CI	P value
Pre-pregnancy BMI ≥25 (kg/m²)	1.62	0.67–3.91	0.28	2.31	0.84–6.56	0.11
2-h PG ≥183 (mg/dl)	5.29	2.15–13.27	0.0004	7.02	2.51–20.72	0.0002
HbA1c ≥5.6 (%)	6.18	2.22–20.47	0.0003	4.67	1.53–16.73	0.0061
Insulin therapy during pregnancy (%)	2.02	0.75–6.10	0.17	2.30	0.75–8.17	0.15

^a We used data from 269 women who had HbA1c test results available at the time of the diagnostic OGTT during pregnancy
^b Adjusted for the maternal age, parity, family history of diabetes, GA at OGTT, fasting and 1-h PG, weight gain during pregnancy, and follow-up period
RR relative risk, BMI body mass index, PG plasma glucose, OGTT oral glucose tolerance test, GA gestational age

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