Impact of efforts to prevent maternal deaths due to obstetric hemorrhage on trends in epidemiology and management of severe postpartum hemorrhage in Japan: a nationwide retrospective study.

BMC Pregnancy Childbirth · 2022 · PMC9205073 · PMID 35715763

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an increasing trendno p-value reported

The age-adjusted severe PPH incidence per 1000 deliveries showed an increasing trend per year in all age groups.

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did not quite reach statistical significanceno p-value reported

The mean volume of transfused RBCs (from 8.2 ± 7.5 to 7.2 ± 6.3 units, Mann–Whitney U test, p < 0.0001) and FFP (from 9.7 ± 10.0 to 8.7 ± 8.6 units, Mann–Whitney U test, p < 0.0001) were all significantly decreased during 2013 to 2018, while arterial embolization did not quite reach statistical significance (from 6.3% to 5.8% of severe PPH).

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