Postpartum hemorrhage(PPH) is a major cause of maternal morbidity and mortality across the world. Incidence of PPH varies in the literature from 2 to 10%, most recent studies find around 10% of PPH and 2% of severe PPH.

In this study, the incidence of PPH in the maternal ward of the CHU Brugmann will be analyzed. This is a tertiary maternal ward with a high proportion of high risk pregnancies with around 3000 admissions per year.

Primary aim of this study is to evaluate the epidemiology of PPH in the CHU Brugmann, incidence and possible underlying causes will be identified and compared to the current literature. A data mining technique will be used to construct a prediction model for PPH.

Inclusion Criteria:

• Pregnant women who have given birth vaginally or by cesarean section at the CHU Brugmann between January 1, 2020 and August 31, 2022
• ≥ 18 years

Exclusion Criteria:

• Age ≤ 18 years
• Age > 60 years
• delivery before 25th week of pregnancy
• delivery outside of the hospital
• abortion

Pregnant women who have given birth vaginally or by cesarean section

Pregnant women who have given birth vaginally or by cesarean section at the CHU Brugmann between January 1, 2020 and August 31, 202