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Table 3 Adjusted multivariable logistic regression models for peripartum blood transfusion associated with pregnancy factors

From: Predicting peripartum blood transfusion: focusing on pre-pregnancy characteristics

  Odds ratio 95% CI
Maternal age ≥ 35 years 1.43 1.40–1.47
Multifetal pregnancy 2.26 2.15–2.39
Nulliparity 1.19 1.16–1.22
Cesarean delivery 1.64 1.60–1.68
Gestational age at births < 37 weeks 2.53 2.41–2.65
Neonatal weight (kg)
 < 2.5 kg 1.64 1.56–1.72
 ≥ 4.0 kg 1.40 1.33–1.48
Neonatal sex (male) 0.95 0.93–0.97
Hypertension 2.41 2.29–2.53
Postpartum hemorrhage 9.09 8.87–9.31
Placental abruption 4.74 4.37–5.14
Placenta previa 13.65 13.12–14.20
Embolization 218.90 184.34–259.95
Hysterectomy 105.11 89.81–123.01
  1. Abbreviations: CI Confidence interval