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Comparing Standardized and Parent-Reported Motor Outcomes of Extremely Preterm Infants

Maeve Morgan-Feir1, Andrea Abbott1, Anne Synnes2,3,4

  • 1Department of Occupational Science & Occupational Therapy, University of British Columbia, Vancouver, BC V6T 2B5, Canada.

Children (Basel, Switzerland)
|August 4, 2019
PubMed

Insights

Many extremely preterm infants show average motor scores at 18 months but have functional difficulties by age 3. Ongoing developmental monitoring is crucial for these high-risk children.

Area of Science:

  • Neonatal research
  • Developmental pediatrics
  • Pediatric neurology

Background:

  • Extremely preterm infants face elevated risks for motor impairments.
  • The Canadian Neonatal Follow-Up Network (CNFUN) provides valuable data for studying preterm infant outcomes.

Purpose of the Study:

  • To compare 18-month corrected age (CA) motor outcomes of extremely preterm infants with parent-reported functional outcomes at 3 years CA.
  • To assess the predictive value of early motor assessments for later functional abilities.

Main Methods:

  • Utilized CNFUN data from 1376 infants.
  • Conducted chi-square analyses comparing Bayley-III motor scores (18 months CA) with Ages and Stages Questionnaire (ASQ) motor scores (3 years CA).
  • Examined correlations between 18-month Bayley-III scores and 3-year ASQ functional motor outcomes.

Main Results:

  • One in five infants with average or above average Bayley-III scores at 18 months CA exhibited parent-reported fine and gross motor difficulties at 3 years CA.
  • Bayley-III scores demonstrated only moderate correlation with functional motor outcomes at 3 years CA.
  • The Bayley-III motor composite score showed higher clinical utility than its sub-scale scores.

Conclusions:

  • The Bayley-III assessment at 18 months CA identifies most, but not all, infants with motor problems.
  • Continuous follow-up is essential for extremely preterm infants to monitor for emerging motor deficits.
  • Early motor assessments require careful interpretation due to moderate predictive validity for later functional outcomes.

Keywords:
Ages and Stages QuestionnaireBayley-IIIextremely preterm infantsmotor outcomes

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