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Severe Maternal Morbidity During Delivery Hospitalization in a Large International Administrative Database, 2008-2013: A Retrospective Cohort

score matching, however, delivery managed by obstetric residents was not significantly associated with severe maternal morbidity (adjusted OR, 0.74; 95% CI, 0.39-1.38) and was not associated with severe neonatal morbidity (adjusted OR, 0.51; 95% CI, 0.25-1.04). In summary, the principal finding of the study indicated that attempted operative vaginal deliveries managed by supervised obstetric residents were not associated with greater rates of severe maternal and neonatal morbidity than those managed by attending obstetricians alone. Residency programs should continue to provide supervised training of operative vaginal deliveries.