Table 1—

Birth weight and birth outcomes by maternal glucose levels within the nondiabetic range (≤7.8 mmol/l 60 min after a 50-g glucose load) in the retrospective Cambridge Wellbeing Study

OutcomeMaternal glucose level (mmol/l)*
Trend (per +1 mmol/l)Ptrend
<4.04.1–5.05.1–6.06.1–7.07.1–7.8
n3111,0501,016554227
Birth weight (g)3,446 (3,398–3,496)3,514 (3,488–3,540)3,529 (3,502–3,555)3,606 (3,570–3,642)3,622 (3,555–3,690)46 ± 8<0.0001
Assisted delivery (%)14.4 (9.6–19.3)19.9 (17.1–22.6)21.5 (18.6–24.3)20.4 (16.5–24.3)27.8 (21.3–34.3)2.1 ± 0.80.006
Emergency cesarean delivery (%)10.9 (6.1–15.8)15.5 (12.8–18.3)17.7 (14.8–20.5)20.4 (16.5–24.2)27.8 (21.5–34.1)3.4 ± 0.8<0.0001
Elective cesarean delivery (%)9.1 (4.5–13.6)13.3 (10.7–15.8)14.3 (11.7–17.0)16.2 (12.6–19.8)26.5 (20.8–32.3)3.1 ± 0.7<0.0001
  • Data are means (95% CI) or means ± SEM adjusted for sex and parity. n = 3,158.

  • *

    * After a 50-g oral glucose challenge at 27–29 weeks of gestation.