The rise in severe maternal health problems is not explained by obvious factors

Severe maternal health problems are increasing in the US, especially for Black mothers. It turns out, common explanations like a mother's age or hospital type do not explain most of this rise.

For years, researchers and policymakers have tried to explain the rising rates of severe maternal morbidity by looking at factors like patient demographics or hospital resources. This paper shows that those factors explain very little of the overall increase. It means the underlying causes are still largely unknown, making it harder to target effective interventions.