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16 Sociodemographic and Hospital-Level Characteristics Associated with Hospital-Onset Bacteremia in the Neonatal Intensive Care Unit

Published online by Cambridge University Press:  03 April 2024

Aaron Milstone
Affiliation:
Johns Hopkins University School of Medicine
Shaoming Xiao
Affiliation:
Johns Hopkins University School of Medicine
Elizabeth Colantuoni
Affiliation:
Johns Hopkins University Bloomberg School of Public Health
Erica Prochaska
Affiliation:
Johns Hopkins University Bloomberg School of Public Health
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Abstract

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OBJECTIVES/GOALS: The primary objective is to measure the independent association of hospital-level and sociodemographic variables on the rate of hospital-onset bacteremia among infants admitted to the neonatal intensive care unit in a United States of America retrospective cohort. The secondary outcome will be relative blood culture collection rate. METHODS/STUDY POPULATION: The study is an analysis of a retrospective cohort comprised of infants admitted to 322 neonatal intensive care units (NICUs) in the United States of America between 2016-2021. The primary outcome will be hospital-onset bacteremia (HOB), defined as a positive blood culture with a bacteria or fungi after day 3 of admission. Independent risk factors will include birthweight, postnatal age, central venous catheter presence, sociodemographic variables (race, ethnicity, insurance status and ZIP code-level demographic data from the US Census American Community Survey (ACS), and hospital-level variables. Infants will be stratified by sociodemographic groups and a Poisson model will be utilized to measure the adjusted association between risk of HOB and clinical and hospital-level variables. RESULTS/ANTICIPATED RESULTS: I anticipate that infants in sociodemographic groups with a history of socioeconomic marginalization will have a higher unadjusted rate of HOB; however, sociodemographic variables will not be independently associated with HOB risk after adjusting for markers of hospital quality and acuity, such as quartiles of the following: mean admissions per year, percentage of infants born <1500g, annual blood culture contamination rate, and percentage infants born at another facility. DISCUSSION/SIGNIFICANCE: Neonatal bacteremia has high morbidity and mortality; however, its contribution to known infant mortality inequities is unknown. This study will estimate the burden of infant HOB stratified by sociodemographic groups and measure the independent association of sociodemographic and hospital-level variables on the adjusted rate of HOB.

Type
Biostatistics, Epidemiology, and Research Design
Creative Commons
Creative Common License - CCCreative Common License - BYCreative Common License - NCCreative Common License - ND
This is an Open Access article, distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives licence (https://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is unaltered and is properly cited. The written permission of Cambridge University Press must be obtained for commercial re-use or in order to create a derivative work.
Copyright
© The Author(s), 2024. The Association for Clinical and Translational Science