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Table 3 Maternal fasting plasma glucose levels per trimester, birth weight and mode of delivery (Rio de Janeiro, Brazil - 1999 and 2008)

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

Weight at birth (Kg) Fasting plasma glucose in the first trimester (mg/dL) Fasting plasma glucose in the second trimester (mg/dL) Fasting plasma glucose in the third trimester (mg/dL)
N Mean SD p N Mean SD p N Mean SD p
Underweight 9 76.1 10.2 0.585 15 78.7 12.3 0.005 8 82.6 14.7 0.545
Normal 286 79.3 10.3 412 78.8 9.9 342 78.7 10.6
High (macrosomia) 15 78 7.6 24 86.2 19.7 21 80 11.6
Post-hoc (p)       86.2 > 78.8 (0.003)       
Mode of delivery             
Vaginal 173 78.8 9.4 0.582 244 78.0 9.3 0.039 194 77.1 10.0 0.007
Cesarean 139 79.4 11.0   218 80.4 11.5   193 80.4 10.9  
Forceps 15 76.6 12.6   18 77.9 12.5   15 80.1 11.4  
Post-hoc (p)       80.4 > 78.0 (0.034)ª     80.4 > 77.1 (0.005)b   
  1. p = Post-hoc.
  2. aFasting plasma glucose in the second trimester; bfasting plasma glucose in the third trimester.