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Table 4 Adjusted OR for birth weight classified by jointed pre-pregnancy BMI and GWGrate

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

Pre-BMI/GWGrate N(%) SGA LGA
OR a 95%CI OR a 95%CI
Underweight
 Insufficient 205 (5.72) 1.760 0.799–3.874 1.860 0.556–6.220
 adequate 128 (3.57) Ref.   Ref.  
 Excessive 175 (4.88) 0.910 0.370–2.239 3.305 0.990–11.038
Normal weight
 Insufficient 698 (19.47) 1.514 0.922–2.311 0.962 0.648–1.430
 adequate 683 (19.05) Ref.   Ref.  
 Excessive 1173 (32.72) 0.650 b 0.387–0.945 1.606 b 1.155–2.233
Overweight/Obesity
 Insufficient 60 (1.67) 0.805 0.135–4.811 0.190b 0.042–0.853
 adequate 128 (3.57) Ref.   Ref.  
 Excessive 335 (9.35) 0.515 0.146–1.809 1.698 b 1.062–2.996
  1. a Adjusted for maternal age, occupation, gravidity, parity, GDM and gestational hypertension; b P < 0.05