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Can the Bayley Scales of Infant Development at 18 months predict child behaviour at 7 years?

Jacqueline F Gould1,2, Emily Hunt2, Rachel M Roberts2

  • 1Healthy Mothers, Babies and Children, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia.

Journal of Paediatrics and Child Health
|August 14, 2018
PubMed

Insights

The Bayley Scales of Infant Development-II at 18 months showed a weak association with school-age behavioral outcomes in preterm infants. This suggests limited predictive validity for long-term behavioral functioning in this vulnerable population.

Area of Science:

  • Developmental Pediatrics
  • Neonatal Follow-up
  • Child Psychology

Background:

  • Infants born preterm (<37 weeks gestation) face heightened risks for adverse neurodevelopmental outcomes.
  • Routine neurodevelopmental assessments, such as the Bayley Scales of Infant Development (BSID), are common in neonatal centers.
  • The predictive validity of the BSID for long-term outcomes in preterm infants remains a subject of investigation.

Purpose of the Study:

  • To evaluate the predictive capacity of the Bayley Scales of Infant Development-II (BSID-II) administered at 18 months.
  • To assess the association between BSID-II scores and behavioral functioning at school age (7 years) in children born preterm.
  • To explore potential interactions between early developmental assessments and allied health service utilization on later behavioral outcomes.

Main Methods:

  • A cohort of 657 children born before 33 weeks gestation was recruited from Australian neonatal centers.
  • Child development was assessed at 18 months corrected age using the BSID-II by a qualified psychologist.
  • Parent-reported behavioral functioning at 7 years was measured using the Strengths and Difficulties Questionnaire, Behavior Rating Inventory of Executive Function, and Conners 3rd Edition ADHD Index.

Main Results:

  • A one-point increase in the BSID-II Mental Development Index was associated with a small decrease in behavioral scores at 7 years.
  • Specific associations included: -0.07 for Strengths and Difficulties Questionnaire Total Difficulties (95% CI -0.10, -0.03).
  • Further associations: -0.12 for Behavior Rating Inventory of Executive Function Global Executive Composite (95% CI -0.21, -0.04) and -0.16 for Conners 3rd Edition ADHD Index (95% CI -0.26, -0.05).

Conclusions:

  • The BSID-II administered at 18 months demonstrated a weak association with parent-reported behavioral outcomes at 7 years in preterm children.
  • These findings suggest that the BSID-II may have limited predictive utility for school-age behavioral functioning in this high-risk population.
  • Further research is warranted to identify more robust predictors of long-term behavioral development in preterm infants.
Abstract

Keywords:
behaviourchild developmentpreterm birth

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