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Table 4 Comparison of adverse pregnancy outcomes between subjects with optimal GWG determined by the Asian BMI cut-offs# and those with optimal GWG determined by the IOM BMI cut-offs#

From: Gestational weight gain in Chinese women -- results from a retrospective cohort in Changsha, China

Outcomes Subjects with optimal GWG according to Asian BMI category# Subjects with optimal GWG according to IOM BMI category# Crude OR (95%CI) Adjusted OR (95%CI)a
N % N %
Preterm
 Yes 434 7.10 450 6.99 1.02(0.89, 1.17) 1.03(0.90, 1.19)
 No 5676   5988   Reference  
Birth weight
 LBW 351 5.74 370 5.75 0.99(0.85, 1.15) 1.01(0.87, 1.17)
 Macrosomia 242 3.96 319 4.95 0.79(0.67, 094) 0.79(0.67, 0.94)
 Normal 5517   5749    
Birth weight by gestational age
 SGA 520 8.51 530 8.23 1.02(0.90, 1.16) 1.02(0.90, 1.16)
 LGA 530 8.67 641 9.96 0.86(0.76, 0.97) 0.86(0.76, 0.98)
 Normal 5060   5267    
PIH
 Yes 165 2.70 190 2.95 0.91(0.74, 1.13) 0.93(0.75, 1.15)
 No 5945   6248    
GDM
 Yes 57 0.93 57 0.89 1.05(0.73, 1.52) 1.06(0.73, 1.53)
 No 6053   6381    
  1. aAdjustment covariates are maternal age, parity, education and smoking during pregnancy
  2. #Optimal gestational weight gain determined by pre-pregnancy BMI category is listed in Table 1