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Neonatal intensive care unit occupancy rate and probability of discharge of very preterm infants

Marc Beltempo¹, Elyonora Sargi², Sharina Patel^3,2

¹Division of Neonatology, Montreal Children's Hospital - McGill University Health Centre, Montreal, QC, Canada. marc.beltempo@mcgill.ca.

Journal of Perinatology : Official Journal of the California Perinatal Association

|January 7, 2023

Abstract

Objective:

To assess the association of NICU occupancy with probability of discharge and length of stay (LOS) among infants born <33 weeks gestational age (GA).

Study Design:

Retrospective study of 3388 infants born 23-32 weeks GA, admitted to five Level 3/4 NICUs (2014-2018) and discharged alive. Standardized ratios of observed-to-expected number of discharges were calculated for each quintile of unit occupancy. Multivariable linear regression models were used to assess the association between occupancy and LOS.

Results:

At the lowest unit occupancy quintiles (Q1 and Q2), infants were 12% and 11% less likely to be discharged compared to the expected number. At the highest unit occupancy quintile (Q5), infants were 20% more likely to be discharged. Highest occupancy (Q5) was also associated with a 4.7-day (95% CI 1.7, 7.7) reduction in LOS compared Q1.

Conclusion:

NICU occupancy was associated with likelihood of discharge and LOS among infants born <33 weeks GA.

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