Table 2.
Variables associated with postpartum hemorrhage
| Before training, 2009 (n = 534) | After training, 2011 (n = 546) | p-value | |||
|---|---|---|---|---|---|
| Estimated blood loss (mL) | 1109 | SD = 872 | 1051 | SD = 653 | 0.22 |
| RBC transfusions ≥1 unit | 111 | 20.8% | 67 | 12.3% | < 0.01 |
| 1 unit | 2 | 0.4% | 3 | 0.5% | 1.0* |
| 2 units | 67 | 12.5% | 41 | 7.5% | <0.01 |
| 3 units | 15 | 2.8% | 4 | 0.7% | <0.01 |
| 4 units | 12 | 2.2% | 11 | 2.0% | 0.79 |
| ≥5 units | 15 | 2.8% | 8 | 1.5% | 0.13 |
| Platelet transfusions ≥1 unit | 14 | 2.8% | 8 | 1.5% | 0.18 |
| Plasma transfusions ≥1 unit | 27 | 5.1% | 18 | 3.3% | 0.15 |
| Iron sucrose injections ≥1 unit | 43 | 8.1% | 52 | 9.5% | 0.39 |
| Hgb level before birth (n = 585) | 11.4 | SD = 1.2 | 11.6 | SD = 1.2 | 0.11 |
| Lowest Hgb level (n = 1070) | 9.1 | SD = 1.5 | 9.3 | SD = 1.4 | 0.18 |
| Lowest hematocrit (n = 658) | 27.4 | SD = 4.3 | 28.0 | SD = 4.3 | 0.09 |
| Hgb level at discharge (n = 1066) | 9.6 | SD = 1.1 | 9.6 | SD = 1.2 | 0.750 |
| Manual removal of placenta | 47 | 8.8% | 52 | 9.5% | 0.68 |
| Curettage | 59 | 11.0% | 33 | 6.0% | <0.01 |
| B-Lynch sutures | 8 | 1.5% | 8 | 1.5% | 0.96 |
| Hysterectomy | 3 | 0.6% | 2 | 0.4% | 0.68* |
| Uterine artery embolization | 10 | 1.9% | 1 | 0.2% | 0.01 |
Standard deviation is given in combination with the mean; percentage (%) is given with the number of participants. The p-values refer to t-test for differences in means and chi-squared test or Fisher's exact test *for differences in proportions.
Hgb, hemoglobin; RBC, red blood cell; SD, standard deviation.