To investigate the prevalence of elevated HbA1c 14 weeks postpartum in different ethnic groups and in women with and without gestational diabetes mellitus (GDM) in the index pregnancy and to explore demographic and biological factors from early pregnancy associated with elevated HbA1c (HbA1c =5.7% (=39mmol/mol)) postpartum.
From a cohort study in Oslo, Norway, we included 570 pregnant women, examined in gestational week 15, 28, and 14 weeks postpartum. The association between elevated HbA1c and demographic and biological factors were assessed by logistic regression analyses.
The prevalence of elevated HbA1c postpartum was 23% in the total population, 15% among Western Europeans and 28% among women with ethnic minority background (p