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Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
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Predictive validity of the Bayley, Third Edition at 2 years for intelligence quotient at 4 years in preterm infants

Michelle M Bode1, Diane B DʼEugenio, Barbara B Mettelman

  • 1*Department of Pediatrics, Upstate Medical Center, SUNY, Syracuse, NY; †Department of Neonatology, Crouse Hospital, Syracuse, NY.

Journal of Developmental and Behavioral Pediatrics : JDBP
|November 6, 2014
PubMed

Insights

The Bayley-III cognitive and language scales accurately predict preschool cognitive abilities in preterm infants. This tool aids in early evaluation of interventions and neonatal care guidelines.

Area of Science:

  • Neonatal Development
  • Developmental Psychology
  • Pediatric Neurocognition

Background:

  • Premature infants born at ≤ 30 weeks' gestation face risks for cognitive deficits.
  • Early identification of cognitive outcomes is crucial for timely interventions.
  • The predictive validity of infant assessments for later cognitive function requires ongoing investigation.

Purpose of the Study:

  • To assess the predictive validity of the Bayley Scales of Infant and Toddler Development, Third Edition (Bayley-III) administered at 2 years for preschool cognitive abilities.
  • To evaluate the Bayley-III's ability to predict cognitive outcomes in children born extremely preterm.
  • To inform the development of guidelines for neonatal care and parental counseling.

Main Methods:

  • A prospective regional study followed 187 infants born at ≤ 30 weeks' gestation.
  • Cognitive assessments were conducted at 2 and 4 years using the Bayley-III and the Wechsler Preschool and Primary Scale of Intelligence-III (WPPSI-III).
  • Correlation coefficients, sensitivity, and specificity were used to examine predictive validity, with a socioeconomically matched term control group for normative data.

Main Results:

  • The Bayley-III cognitive and language scores showed strong correlations with the WPPSI-III IQ scores (r=.81 and r=.78, respectively).
  • The majority of preterm children (81%) maintained their developmental classification (normal, mild/moderate, or severe delay) from 2 to 4 years.
  • The Bayley-III demonstrated good accuracy in predicting cognitive status at preschool age.

Conclusions:

  • The Bayley-III exhibits strong predictive validity for 4-year cognitive abilities in preterm children, surpassing previous editions.
  • These findings support the use of the Bayley-III for early identification of cognitive risks in this population.
  • The results have significant implications for evaluating perinatal interventions and informing neonatal care practices.
Abstract

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