Table 2.
Evaluation of the statistical difference between PPH groups (> 1000 mL) and non-PPH groups (< 1000 mL).
| PPH | non PPH | p-value | OR (95% CI) | p-value | ||
|---|---|---|---|---|---|---|
| N | 9706 | 188 | ||||
| Blood loss (mL) | 312 | 1402 | ||||
| 1 | Age (year) | 30.9 | 32.4 | < 0.05 | 1.06 (1.03–1.10) | < 0.05 |
| 2 | Parity | 0.62 | 0.37 | 0.21 | 0.62 (0.49–0.79) | < 0.05 |
| 3 | Maternal height (cm) | 158.6 | 159.4 | < 0.05 | 1.03 (1.01–1.06) | < 0.05 |
| 4 | Maternal weight before pregnancy (kg) | 53.2 | 57.2 | < 0.05 | 1.04 (1.02–1.05) | < 0.05 |
| 5 | Maternal weight on admission of labor(kg) | 63.1 | 67.5 | < 0.05 | 1.04 (1.03–1.06) | < 0.05 |
| 6 | Pregnant gestation of labor (wk) | 38.8 | 39 | 0.2 | 1.06 (0.96–1.17) | 0.19 |
| 7 | Birth weight of baby (g) | 3019 | 3153 | < 0.05 | 1 | < 0.05 |
| 8 | Sex of baby | 0.51 | 0.91 (0.67–1.21) | 0.51 | ||
| Male | 51.50% | 48.90% | ||||
| Female | 48.50% | 51.10% | ||||
| 9 | The fetal position | 0.08 | 3.07 (0.95–9.93) | 0.06 | ||
| Cephalic delivery | 98.40% | 99.48% | ||||
| Breech delivery | 1.59% | 0.52% | ||||
| 10 | Oxytocin use before delivery | < 0.05 | 1.68 (1.22–2.31) | < 0.05 | ||
| oxytocin use | 20.10% | 29.70% | ||||
| spontaneous delivery | 79.90% | 90.30% | ||||
| 11 | model of delivery | < 0.05 | ||||
| spontaneous delivery | 95.14% | 84.57% | ||||
| vacuum delivery | 0.98% | 3.19% | 3.63 (1.57–8.41) | < 0.05 | ||
| forceps delivery | 3.86% | 12.23% | 3.56 (2.27–5.58) | < 0.05 |
(1–7) mean value, (8–11) the rate.
OR odds ratio, PPH postpartum hemorrhage.