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Table 2 Adjusted OR for birth weight classified by pre-pregnancy BMI, GWG and GWGrate

From: Association among pre-pregnancy body mass index, gestational weight gain and neonatal birth weight: a prospective cohort study in China

Items SGA LGA
OR 95%CI OR 95%CI
Pre-BMI a
 Underweight 1.853 c 1.316–2.610 0.575 d 0.383–0.864
 Normal weight Ref.   Ref.  
 Overweight/Obesity 0.576 0.328–1.010 1.996 c 1.540–2.588
GWG b
 Insufficient 1.850 c 1.309–2.616 0.601 d 0.399–0.903
 adequate Ref.   Ref.  
 Excessive 0.628 0.351–1.125 1.676 c 1.279–2.194
GWGrate b
 Insufficient 1.524 d 1.068–2.174 0.846 0.600–1.193
 adequate Ref.   Ref.  
 Excessive 0.668 d 0.458–0.973 1.673 c 1.274–2.196
  1. a Adjusted for maternal age, occupation, gravidity, parity; b Adjusted for maternal age, occupation, gravidity, parity, GDM, gestational hypertension and pre-BMI; c P < 0.001; d P < 0.05