Role of ethnicity in high-level obstetric clinical incidents: a review of cases from a large UK NHS maternity unit.

Although there was no difference in the proportion of serious incidents between the groups, there were differences in medical and pregnancy-related risk factors between groups and in the root causes identified. Efforts are needed to ensure equity of early access to antenatal care and to ensure that there is adequate staffing to ensure that women's needs are met; this is particularly cogent when there are complex medical or social needs.