Study of 487,000 Births in Canada Reveals Higher Obstetric Trauma Risks for Asian and Black Immigrant Mothers

New research shows Asian mothers and Black refugees in Canada face significantly higher rates of obstetric trauma during childbirth compared to other groups.

By: AXL Media

Published: Mar 16, 2026, 7:02 AM EDT

Source: Information for this report was sourced from the Canadian Medical Association Journal (CMAJ).

Understanding Obstetric Trauma Disparities

Obstetric trauma involves severe injuries to the perineum, cervix, or vagina during childbirth. While these injuries occur in a minority of births, they can lead to debilitating long-term complications such as bowel incontinence, pelvic floor dysfunction, hemorrhage, and infection. To better understand who is most at risk, researchers analyzed data from 487,158 births in Ontario between 2012 and 2021. The study aimed to look beyond simple racial categories to see how immigration status and time spent in Canada intersect with maternal health outcomes.

Racial Statistics and Risk Factors

The study utilized prenatal screening records to categorize births by race and observed the following trauma rates:

Asian Mothers: 7.5% (The highest risk group, experiencing a 1.5-fold increase compared to White mothers).

White Mothers: 5.0%.