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Related Experiment Video

Updated: Jun 8, 2026

High-Throughput Total Internal Reflection Fluorescence and Direct Stochastic Optical Reconstruction Microscopy Using a Photonic Chip
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Infant Mortality in Norway: A Population-Based Study From 2009 Through 2020.

Beate Horsberg Eriksen1,2, Claus Klingenberg3,4, Tor Åge Myklebust5

  • 1Department of Pediatrics, Møre and Romsdal Hospital Trust, Ålesund, Norway.

Acta Paediatrica (Oslo, Norway : 1992)
|April 17, 2026
PubMed
Summary
This summary is machine-generated.

Infant mortality in Norway significantly decreased by over 40% between 2009 and 2020. Prematurity-related causes were the leading, yet declining, factor in infant deaths.

Keywords:
infant mortality ratemortality trendsneonatal mortalitypost‐neonatal mortality

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Area of Science:

  • Pediatrics
  • Public Health
  • Epidemiology

Background:

  • Infant mortality remains a critical public health indicator.
  • Understanding trends and causes is vital for targeted interventions.
  • Norway has a robust system for tracking birth and death data.

Purpose of the Study:

  • To analyze infant mortality trends in Norwegian live-born infants (LBIs) from 2009-2020.
  • To identify the primary causes of infant death.
  • To examine how mortality trends vary by gestational age (GA).

Main Methods:

  • A population-based cohort study utilizing Norwegian birth and death registries.
  • Analysis of 676,931 live-born infants over a 12-year period.
  • Categorization of infant deaths by cause and gestational age.

Main Results:

  • A significant linear decline in infant mortality from 2.9 to 1.7 per 1000 LBIs.
  • Prematurity-related causes (39.6%) were the leading cause of death, followed by malformations (27.0%).
  • The most substantial mortality reduction was observed in extremely preterm infants (<28 weeks).

Conclusions:

  • Infant mortality in Norway decreased by over 40% from 2009 to 2020.
  • Neonatal deaths constituted approximately 70% of all infant deaths.
  • While prematurity-related mortality decreased, it remained the primary cause of infant death.