Rate of severe maternal morbidity per 10,000 delivery hospitalizations
Rate of severe maternal morbidity per 10,000 delivery hospitalizations
Severe maternal morbidity (SMM) in the United States over time. The overall rate increased almost 200% over the years, from 49.5 in 1993 to 144.0 in 2014. This increase has been mostly driven by blood transfusions, which increased from 24.5 in 1993 to 122.3 in 2014.