The Association of NICU Strain with Neonatal Mortality and Morbidity
Salazar, E. G.; Passarella, M.; Formanowski, B.; Rogowski, J.; Edwards, E.; Phibbs, C.; Lorch, S. A.
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ObjectiveTo examine the association of admission NICU strain with neonatal mortality and morbidity. Study Design2008-2021 South Carolina cohort using linked vital statistics and discharge data of 22-44 weeks GA infants, born at hospitals with [≥] level 2 unit and [≥]5 births of infants <34 weeks GA/year. The exposure was tertiles of admission NICU strain, defined as the sum of infants <44 weeks GA with a congenital anomaly plus all infants born <33 weeks GA at midnight on the day of birth. We used Poisson generalized linear mixed models to examine the association of exposure to strain with the primary outcome of a composite of mortality and term and preterm morbidities adjusting for patient and hospital characteristics. ResultsWe studied 64,647 infants from 30 hospitals. High strain was associated with increased risk of mortality and morbidity adjusting for patient/hospital factors (aIRR 1.07, 95% CI 1.01 - 1.12). ConclusionNICU strain is associated with increased adverse outcomes.
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