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Actuarial survival of a large Canadian cohort of preterm infants

Huw P Jones1, Stella Karuri, Catherine M G Cronin

  • 1Department of Pediatrics, St Mary's Hospital, Portsmouth, UK. joneshuw@doctors.org.uk

BMC Pediatrics
|November 11, 2005
PubMed

Insights

Survival rates for preterm infants improve significantly with increasing gestational age and birth weight. Early postnatal days pose the highest mortality risk, emphasizing the need for updated survival predictions for parents.

Area of Science:

  • Neonatalogy
  • Perinatal care
  • Infant survival research

Background:

  • Increased survival of preterm and very low birth weight infants necessitates ongoing surveillance.
  • Gestation and birth weight specific survival rates are key indicators of perinatal care quality.

Purpose of the Study:

  • Determine survival to discharge for Canadian preterm infants in neonatal intensive care units (NICUs).
  • Examine the impact of gender and increasing postnatal age on infant survival.
  • Provide accurate survival predictions for counseling parents.

Main Methods:

  • Prospective data collection from 19,507 infants across 17 Canadian NICUs (1996-1997).
  • Exclusion of infants with congenital anomalies.
  • Analysis of gestation and birth weight specific survival rates and actuarial survival curves.

Main Results:

  • Survival to discharge increased with gestational age (54% at 24 weeks to 95% at 30 weeks) and birth weight.
  • Females had higher survival at 24 weeks gestation and for smaller birth weights in early life.
  • Mortality risk was highest within the first 5 days of life.

Conclusions:

  • Actuarial analysis offers valuable insights for parental counseling.
  • Frequent revision of long-term survival predictions is crucial, especially after the initial postnatal days.
Abstract

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