Evaluating preterm infants with the Bayley-III: patterns and correlates of development.
This study investigates the Third Edition of the Bayley Scales of Infant and Toddler Development (Bayley-III) and: (1) early patterns of neurodevelopmental performance among preterm infants 8-12 months of age; and (2) correlations between known risk factors and neurodevelopmental outcome of preterm infants in this cohort. Mean Language Index (LI; 91±15) and Motor Index (MI; 94±17) were significantly lower than the Cognitive Index (CI; 102±15, p<.01). For the majority (53%) of infants, language development was their weakest domain; for another 39%, motor skills were the weakest area of development. Almost one-quarter (22%) of this cohort had mildly delayed language and motor skills, while 7% had significantly delayed language and motor skills. Regression models revealed severely abnormal head ultrasound significantly predicted MI, LI, and CI. Oxygen dependence at discharge predicted CI, LI, and race/ethnicity predicted LI, MI. Results support the addition of the Language Index to the newly revised Bayley-III Scales. Prediction models of developmental performance confirm known neonatal risk factors and reveal sociodemographic risk factors that call for additional research.
Department of Pediatrics, Rush University Medical Center, Chicago, IL, United States. Michelle_Greene@rush.edu
Michelle M
MM
Greene
Kousiki
K
Patra
Michael N
MN
Nelson
Jean M
JM
Silvestri
D003072:Cognition Disorders / Q000175:diagnosis* / Q000523:psychology; D015331:Cohort Studies; D002658:Developmental Disabilities / Q000175:diagnosis* / Q000523:psychology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007235:Infant, Premature, Diseases / Q000175:diagnosis* / Q000523:psychology; D007805:Language Development Disorders / Q000175:diagnosis* / Q000523:psychology; D008297:Male; D019957:Motor Skills Disorders / Q000175:diagnosis* / Q000523:psychology; D009483:Neuropsychological Tests / Q000706:statistics & numerical data*; D011594:Psychometrics; D012189:Retrospective Studies; D012307:Risk Factors