Table 2.
Primary and secondary outcomes. Values are numbers (percentages) unless stated otherwise
| Outcomes | Intravenous oxytocin (n=517) | Intramuscular oxytocin (n=518) | Adjusted odds ratio* (95% CI) | P value | NNT (95% CI) |
|---|---|---|---|---|---|
| Postpartum haemorrhage (≥500 mL) | 97 (18.8) | 120 (23.2) | 0.75 (0.55 to 1.03) | 0.07 | __ |
| Severe postpartum haemorrhage (≥1000 mL) | 24 (4.6) | 42 (8.1) | 0.54 (0.32 to 0.91) | 0.02 | 29 (16 to 201) |
| Mean (SD) blood loss (mL) | 385 (326) | 445 (412) | 60 (14 to 106)† | 0.01 | __ |
| Blood transfusion | 8 (1.5) | 23 (4.4) | 0.31 (0.13 to 0.70) | 0.005 | 35 (20 to 121) |
NNT=number needed to treat.
*
Adjusted for parity and operative vaginal delivery.
†
Mean difference (95% CI).