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Re-evaluating preterm infants with the Bayley-III: patterns and predictors of change

Michelle M Greene1, Kousiki Patra, Jean M Silvestri

  • 1Department of Pediatrics, Rush University Medical Center, Chicago, IL 60612, United States. Michelle_Greene@rush.edu

Research in Developmental Disabilities
|May 7, 2013
PubMed

Insights

Developmental scores for preterm infants often decline between 8 and 20 months. Neonatal factors and sociodemographic variables predict these changes, highlighting the need for comprehensive assessment using the Bayley Scales of Infant and Toddler Development (Bayley-III).

Area of Science:

  • Neonatal development
  • Pediatric neurodevelopmental assessment

Background:

  • Preterm infants face unique developmental challenges.
  • Longitudinal assessment is crucial for understanding developmental trajectories in this population.

Purpose of the Study:

  • To evaluate the psychometric properties of the Bayley Scales of Infant and Toddler Development, Third Edition (Bayley-III).
  • To identify predictors of score changes in preterm infants from 8 to 20 months corrected age.

Main Methods:

  • Longitudinal study of 131 preterm infants assessed using the Bayley-III at two time points.
  • Analysis of mean score differences, test-retest reliability, and classification stability.
  • Investigation of birth, neonatal, and sociodemographic predictors of score changes.

Main Results:

  • Cognitive, Receptive Language, and Fine Motor scores declined; Gross Motor scores remained stable.
  • Bayley-III test-retest reliability was fair to moderate.
  • Developmental delay classifications were often unstable, with significant shifts observed.
  • Small for gestational age status predicted better language and motor scores.
  • Public insurance, sepsis history, lower gestational age, race, and necrotizing enterocolitis predicted score declines.

Conclusions:

  • Bayley-III scores can change significantly in preterm infants during the first two years.
  • Neonatal risk factors and sociodemographic variables are important predictors of developmental trajectories.
  • Comprehensive assessment and early intervention are vital for preterm infants.

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