Table 2.
Multiple logistic regression model included the candidate risk factors of massive blood transfusion (N = 294,695)
| Variables | aOR | 95% CI |
|---|---|---|
| Age (year) | 1.02 | 1.01–1.04 |
| Anemiaa | 1.66 | 1.34–2.05 |
| Thrombocytopeniab | 3.54 | 2.39–5.05 |
| Coagulopathyc | 25.92 | 8.59–69.50 |
| Hypoalbuminemiad | 2.97 | 1.86–4.53 |
| Hepatic dysfunctione | 1.65 | 1.04–2.47 |
| Adenomyosis/ leiomyoma | 1.67 | 0.65–3.48 |
| Uterine scar | 1.39 | 1.15–1.67 |
| Hypertension | 1.03 | 0.40–2.17 |
| In vitro fertilization | 1.14 | 0.94–1.37 |
| Multiple pregnancy | 2.84 | 1.74–4.38 |
| Fetal Macrosomia | 0.77 | 0.46–1.20 |
| Polyhydramnios | 2.52 | 1.19–4.68 |
| Placenta previa | 25.03 | 21.04–29.77 |
| Preterm birth | 0.91 | 0.65–1.25 |
Abbreviations aOR, adjusted odd ratio; CI, confidence interval; aHemoglobin level < 110 g/L; bplatelet count < 150 × 109/L; ccoagulation factor deficiencies or dysfunction; dalbumin level < 35 g/L, not due to hepatic dysfunction; ehepatic failure/ fibrosis/ cirrhosis, chronic active hepatitis or acute hepatitis