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Table 1 Maternal, fetal, and obstetric characteristics of vaginal breech deliveries and non-urgent cesarean sections at 32 + 0—36 + 6 gestational weeks 2004–2017 in Finland

From: Neonatal outcome in vaginal breech labor at 32 + 0—36 + 0 weeks of gestation: a nationwide, population-based record linkage study

  Vaginal
breech labor
n / %
535 / 100%
Non-urgent cesarean
section
n / %
227 / 100%
P-value Crude OR 95%
confidence
interval
Maternal age < 25y 8 / 1.5% 2 / 0.9% 0,712 1.71 0.36—8.11
Maternal age ≥ 35y 116 / 21.7% 53 / 23.3% 0,712 0.91 0.63- 1.32
Nulliparous 287 / 57.7% 132 / 58.1% 0,253 0.83 0.61—1.14
Multipara ≥ 3 deliveries 41 / 7.7% 17 / 7.5% 0,934 1.03 0.57—1.85
Maternal smoking 76 / 14.2% 36 / 15.9% 0,556 0.88 0.57—1.35
Maternal BMI ≥ 30 25 / 4.7% 15 / 6.6% 0,273 0.69 0.36—1.34
History of induced abortion 69 / 12.9% 22 / 9.7% 0,212 1.38 0.83—2.29
History of miscarriage 114 / 21.3% 60 / 26.4% 0,123 0.75 0.53—1.08
History of cesarean section 30 / 5.6% 56 / 24.7%  < 0,001 0.18 0.11—0.29
Assisted reproduction technology 19 / 3.6% 17 / 7.5% 0,019 0.45 0.23—0.89
Diabetes mellitus type I 2 / 0.4% 32 / 14.1%  < 0,001 0.02 0.01- 0.10
Diabetes mellitus type II 2 / 0.4% 1 / 0.4% 0,893 0.85 0.08—9.40
Gestational diabetes mellitus 53 / 9.9% 15 / 6.6% 0,144 1.55 0.86—2.82
Oligohydramnios 5 / 0,9% 14 / 6.2%  < 0,001 0.14 0.05—0.40
Preeclampsia / pregnancy-induced high blood pressure 12 / 2.2% 46 / 20.3%  < 0,001 0.09 0.05—0.17
PPROM 132 / 24.7% 39 / 17.2% 0,023 1.58 1.06—2.35
Birth weight < 10th percentile 22 / 7.6% 42 / 18.5%  < 0,001 0.19 0.11—0.32
Birth weight > 90th percentile 6 / 1.1% 13 / 5.7%  < 0,001 0.19 0.07—0.50
Epidural analgesia 221 / 41.3% 0 / 0%  < 0,001   
Administration of antenatal corticosteroids 88 / 16.4% 106 / 46.7%  < 0,001 0.22 0.16—0.32
Neonatal female sex 264 / 49.3% 124 / 54.6% 0,182 0.81 0.59—1.10
  1. OR Odds Ratio, BMI Body Mass Index, PPROM Preterm Premature Rupture Of Membranes