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Table 4 Maternal fasting plasma glucose levels in the second and third trimesters, divided into three ranges, and outcomes (Rio de Janeiro, Brazil - 1999 and 2008)

From: Association between maternal glucose levels during pregnancy and gestational diabetes mellitus: an analytical cross-sectional study

Fasting glucose (mg/dL) n (%) GDM n (%) OR (95% CI) Macrosomia n (%) OR (95% CI) Cesarean section n (%) OR (95% CI)
2nd Trimester
<80 168 (58.3) 6 (3.6) 1.0 10(3.9) 1.0 110 (40.7) 1.0
80-90 82 (28.5) 4 (4.9) 1.38 (0.38-5.04) 8 (5.7) 1,33 (0.50-3.51) 77 (51.3) 1.36 (0.89-2.08)
90-94 38 (13.2) 8(21.1) 7.2 (2.33-22.24) 6(10.9) 2.03 (0.65-6.33) 31 (51.7) 1.19 (0.66-2.16)
3rd Trimester
<80 140 (62.5) 1 (0.7) 1.0 13(6.0) 1.0 104 (45.2) 1.0
80-90 65 (29) 2 (3.1) 4.4 (0.39-49.56) 5 (4.6) 0.73 (0.25-2.13) 60 (49.6) 1.24 (0.77-1.98)
90-94 19 (8.5) 1(5.3) 7.7 (0.46-128.9) 3 (6.7) 0.77 (0.16-3.62) 29 (58.0) 1.86 (0.95-3.65)
  1. OR: odds ratio; 95% CI: 95% confidence interval.
  2. Adjusted for the following variables: maternal age, parity, pre-pregnancy BMI.
  3. With women diagnosed as having GDM in the second trimester excluded from the analysis of the third trimester.