Skip to main content

Table 1 Maternal and neonatal characteristics with accurate EFW (≤ ± 10%) vs. EFW outlying ± 10%

From: Percent error of ultrasound examination to estimate fetal weight at term in different categories of birth weight with focus on maternal diabetes and obesity

  EFW ≤  ± 10%
N = 7912
EFW outlying 10%
N = 3137
p-Value
Maternal characteristics
  Age (Years) 30.8 ± 5.5 30.9 ± 5.6 0.226 b
  Parity 1.76 ± 1.1 1.82 ± 1.1 0.737 b
  DM 12.3% (973) 13.2% (413) 0.208 a
    • GDM (diet./med.) 11.3% (896) 11.6% (1260) 0.678 a
    • Pre-existing DM 1.0% (77) 1.6% (49) 0.009 a
  Mean pre-pregnancy BMI (kg/m2) 24.3 ± 5.0 24.5 ± 5.1 0.136 b
  Pre-pregnancy BMI ≥ 30 kg/m2 12.4% (966) 13.7% (421) 0.188 a
  Weight Gain (kg) 14.3 ± 6.0 14.2 ± 6.2 0.55 b
  EWG (IOM) 49.1% (3520) 49.7% (1425) 0.602 b
  Days of last US to delivery 3.7 ± 3.7 4.7 ± 4.3  < 0.001 b
  Days of last US to delivery > 7–14 18.2% (1439) 27.7% (870)  < 0.001 a
Fetal anthropometrics
  SGA (≤ 10.Perc.) 11.11% (879) 13.42% (421) 0.001 a
  LGA (≥ 90. Perc.) 7.18% (568) 17.25% (541)  < 0.001 a
  BW ≥ 4000 g 9.4% (743) 19.3% (607)  < 0.001 a
  AC Percentile 46.1 ± 24.3 41.7 ± 25.1 0.025 b
  AC-HC (cm) 0.69 ± 1.83 0.40 ± 2.0  < 0.001 b
  HC/AC-Ratio 0.98 ± 0.05 0.99 ± 0.06  < 0.001 b
Neonatal anthropometrics
  Birth Weight (g) 3416.5 ± 451.6 3522.2 ± 554.9  < 0.001 b
  Birth Weight Percentile 46.57 ± 27.69 53.62 ± 32.01  < 0.001 b
  Shoulder dystocia
(Vaginal delivery mode; N = 8,161)
0.7% (44) 1.3% (28) 0.026 a
  1. aChi-square test, b Student T-test