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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

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

Variables included in the multivariate models Model 1 Model 2 b
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
  1. a We used data from 269 women who had HbA1c test results available at the time of the diagnostic OGTT during pregnancy
  2. 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
  3. RR relative risk, BMI body mass index, PG plasma glucose, OGTT oral glucose tolerance test, GA gestational age