Differences in the birthweight of infants born to patients with early- or mid-to-late-detected gestational diabetes mellitus who underwent guideline-based glycemic control

To examine the effects of strict glycemic control on the birthweight of infants born to Japanese patients with early- or mid-to-late-detected gestational diabetes mellitus (ed- or md-GDM). We retrospectively examined the characteristics of 101 patients with GDM who underwent guideline-based glycemic control. A 75-g oral glucose tolerance test was conducted to diagnose GDM at gestational weeks 11–15 (ed-GDM subgroup) and 24–28 (md-GDM subgroup). Infant birthweight was significantly lower in the ed-GDM subgroup (n = 25) than in the md-GDM subgroup (n = 76) (2688.3 ± 470.4 g vs. 3052.4 ± 383.1 g, p