Overall, 11.4% of pregnancy-related deaths in the U.S. in 2012 to 2019 had an underlying cause of hemorrhage. The most frequent hemorrhage subclassifications varied by race and ethnicity.

Of 30,231 births at National Women's Hospital, Auckland, between January 2006 and December 2009, 12,407 (41%) were in nulliparous women, of whom 11,363 (92%) met the entry criteria for this study.

Background: Increasing rates of postpartum haemorrhage in developed countries over the past two decades are not explained by corresponding changes in risk factors and conjecture has been raised that ...