• Diana L Jin, Eisha A Christian, Frank Attenello, Edward Melamed, Steven Cen, Mark D Krieger, J Gordon McComb, and William J Mack.
• Department of Neurosurgery, Keck School of Medicine of USC, Los Angeles, California, USA. Electronic address: liweijin@usc.edu.
• World Neurosurg. 2016 Apr 1; 88: 399-410.

BackgroundDespite major advances in medicine, racial and socioeconomic disparities continue to affect health care outcomes. Higher overall infant mortality has been reported for black neonates compared with their Hispanic and white counterparts. The underlying basis for these differences remains unclear. A potential influencing factor is the management of premature neurologic complications in this disadvantaged group. This study examines racial and socioeconomic disparities on mortality in preterm infants with posthemorrhagic hydrocephalus (PHH).MethodsData from the Nationwide Inpatient Sample and Kids Inpatient Database were combined from 2000 to 2010. Discharges with International Classification of Diseases, Ninth Revision, Clinical Modification codes for preterm births with intraventricular hemorrhage and PHH were included. Relative risk (RR) ratios for mortality, complications, length of stay, and hospital costs were obtained with multivariate analysis after controlling for patient-level, hospital-level, and admission-level factors.ResultsWhen controlling for patient and hospital factors, black neonates had increased mortality compared with whites and Hispanics (RR = 1.47; P < 0.01). This association existed despite lower rates of congenital cardiac defects (RR = 0.84; P < 0.01), gastrointestinal complications (RR = 0.84; P < 0.01), and general complications of prematurity (RR = 0.95; P = 0.04) in the black cohort. Preterm infants insured by Medicaid had increased mortality compared with those with private insurance (RR = 1.2; P = 0.04) after adjusting for patient and hospital factors.ConclusionsAmong preterm infants with intraventricular hemorrhage and resultant PHH, black infants and those insured by Medicaid have significantly increased mortality but these 2 effects are independent. Further studies are needed to fully understand the factors affecting these racial and socioeconomic disparities.Copyright © 2016 Elsevier Inc. All rights reserved.

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