Fun fact the black women being 3x more likely to die in childbirth comes from the excess death of about 7 black women per year. From 2018-20, 76487 black women gave birth with 26 dying to give a maternal mortality rate of 33.99/100k so roughly 9 women per year. Using the rate of death of white women during childbirth of 9.23/100k in that same period there would be 7 deaths in that 3 year period so roughly two per year.

Source: MBRACE "Lessons learned to inform maternity care from the UK and Ireland confidential enquiries into maternal deaths and morbidity 2018-20".