Sastow DL, Jiang SY, Tangel VE, et al. - Since high Black-serving delivery units and high hospital safety-net burden have been linked to poorer patient outcomes, researchers sought to investigate these hospital-level factors and their association with severe maternal morbidity (SMM), both independently and as effect modifiers of patient-level factors. They analyzed delivery hospitalizations using the 2007–2014 State Inpatient Databases (Florida, New York, California, Maryland, Kentucky). The analysis included 6,879,332 delivery hospitalizations. The delivery unit's patient racial/ethnic composition is associated with adjusted-odds of SMM, both independently and interactively with individual patient race.