Investigating the variations in survival rates for very preterm infants in 10 European regions: the MOSAIC birth

E S Draper1, J Zeitlin, A C Fenton

  • 1Department of Health Sciences, University of Leicester, 22-28, Princess Road West, Leicester LE1 6TP, UK. msn@leicester.ac.uk

Insights

Survival rates for very preterm infants varied significantly across European regions, highlighting the need for standardized data collection. This study examines mortality and survival in neonatal intensive care units (NICUs).

Area of Science:

  • Neonatalogy and Perinatal Medicine
  • Public Health and Epidemiology
  • Pediatric Critical Care

Background:

  • Significant variations exist in the survival rates and mortality patterns of very preterm infants across different European regions.
  • Understanding these regional disparities is crucial for improving neonatal care outcomes and developing targeted interventions.

Purpose of the Study:

  • To investigate and quantify the variation in survival and mortality rates among very preterm infants across geographically defined European regions.
  • To analyze the timing of deaths in relation to gestational age and regional differences in neonatal intensive care unit (NICU) admission and survival.

Main Methods:

  • Prospective birth cohort study of very preterm infants (gestational age 22 to 31 weeks) across 10 European regions in 2003.
  • Data collection included all pregnancy outcomes, focusing on survival to discharge from hospital, and detailed analysis of mortality timing.
  • Gestational age groups were analyzed, with specific attention to infants born before 24 weeks and between 24-27 weeks.

Main Results:

  • Overall survival to discharge was 89.5%, with regional variations ranging from 74.8% to 93.2%.
  • Survival rates for infants less than 24 weeks' gestation were below 2%, and approximately 50% for those between 24-27 weeks.
  • Significant regional differences were observed in the timing of infant deaths and NICU admission rates, particularly for the most premature infants.

Conclusions:

  • Wide variations in survival rates and timing of death for very preterm infants necessitate standardized data collection methods for accurate international comparisons.
  • Proposes using 'infants alive at the onset of labor' as a standardized denominator for comparing mortality rates across different regions and gestational age bands.
Abstract

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