Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Distributions of the amount of postpartum blood loss and PPH.
| Outcomes | Total population (N = 153,765) | Natural conception (N = 147,281) | Conceived through IVF/ICSI (N = 6,484) | p-Valuea |
|---|---|---|---|---|
| Postpartum blood loss (mL) | 315.2 ± 155.7 | 312.7 ± 150.2 | 372.6 ± 243.4 | <0.001** |
| PPH | ||||
| Yes | 2,990 (1.9%) | 2,561 (1.7%) | 218 (3.4%) | <0.001** |
| No | 150,775 (98.1%) | 144,720 (98.3%) | 6,266 (96.6%) | |
p values were calculated by Mann–Whitney test and chi-square test. **p < 0.01.
