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Table 1 Patient and fetal characteristics of study participants

From: Accuracy of immediate antepartum ultrasound estimated fetal weight and its impact on mode of delivery and outcome - a cohort analysis

Characteristic Patients with EFW (N = 492) Patients without EFW (N = 515) p
Age, y 28.7 ± 5.2 28.7 ± 5.1 0.866a
Gravidity, n 2 (1–3) 2 (1–3) 0.478b
Parity, n 1 (1–2) 1 (1–2) 0.049b
Body mass index (pregravid), kg/m2 23.8 ± 4.8 23.6 ± 5.2 0.623a
Maternal weight gain in pregnancy, kg 15.92 ± 5.9 15.14 ± 6.1 0.049a
Gestational diabetes, n 32 (6.5%) 22 (4.3%) 0.116c
Hypertensive diseases, n 13 (2.6%) 3 (0.6%) 0.009c
Duration of the second stage, min 46.4 ± 50.0 46.0 ± 47.5 0.902a
Gestational age at delivery, d 280.2 ± 8.7 278.8 ± 7.8 0.006a
Birth weight, g 3528 ± 485 3540 ± 496 0.718a
Birth weight ≥ 4500 g, n 12 (2.4%) 16 (3.1%) 0.519c
Birth length, cm 50.4 ± 2.2 50.4 ± 2.1 0.795a
Head circumference, cm 35.1 ± 1.4 35.0 ± 1.4 0.386a
Head circumference ≥ 38 cm, n 20 (4.1%) 13 (2.5%) 0.160c
Umbilical arterial blood pH 7.27 ± 0.07 7.28 ± 0.07 0.378a
Base excess, mmol/L − 4.64 ± 2.89 − 4.39 ± 2.84 0.167a
5´-APGAR-Score 10 (9–10) 10 (9–10) 0.695b
  1. a Student’s t-test for independent samples
  2. b Mann-Whitney U-test by ranksc Pearson’s χ2-test for homogeneity