Severity of admission anemia and risk of postpartum hemorrhage: a single-center retrospective cohort study (2024–2025)
Primary result · PPHResult — go to the resultAdjusted odds ratio 1.79 95% CI 1.04–2.98Authors' conclusion
In this cohort, there was an inverse relationship between admission hemoglobin and the PPH rate.
Study context
- Population
- Vaginal and cesarean deliveries at a single institution
- Participants
- 4,635 deliveries
- Comparison
- Admission Hb categories
- Primary endpoint
- PPH rate (quantitative blood loss ≥ 1000 mL)
Methodological detailssingle-centre
- Single-centre
Primary result
PPH
Adjusted odds ratio
1.79
95% CI 1.04–2.98
By group
Hb 8-8.9 g/dL
aOR 1.79 (95% CI 1.04–2.98)
As reported in the abstract
- PPH incidence increased as admission Hb decreased (Cochrane test of trend)
- P < 0.001
Further findings
Admission Hb and anemia prevalence
- Median admission Hb
- 11.5 g/dL
- Women anemic
- 32.7%
Original publication
Severity of admission anemia and risk of postpartum hemorrhage: a single-center retrospective cohort study (2024–2025). Int J Obstet Anesth. Published 26 April 2026. doi:10.
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