| Excessive uterine bleeding1 |
Levonorgestrel intrauterine system vs. control group |
Number of women canceling their decision to have a hysterectomy |
6 months |
14 |
64 |
2 (1 to 4) |
| First-stage labor pain2 |
Intracutaneous injections of sterile water vs. placebo |
Labor pain was measured with a 10-cm visual analog scale (0 cm = no pain; 10 cm = worst conceivable pain) |
90 minutes |
25 |
59 |
3 (2 to 13) |
| Subcutaneous injections of sterile water vs. placebo |
|
|
25 |
52 |
4 (3 to 82) |
| Breech presentation3 |
Planned cesarean section vs. planned vaginal birth (control) |
Perinatal or neonatal mortality or serious neonatal morbidity |
6 weeks |
5.0 |
1.6 |
30 (20 to 54) |
| Perinatal or neonatal mortality |
|
1.3 |
0.3 |
104 (54 to 416) |
| Serious neonatal morbidity |
|
3.8 |
1.4 |
41 (26 to 90) |
