title: Bayley-III motor scale and neurological examination at 2 years do not predict motor skills at 4.5 years.
abstract: OBJECTIVE
  To determine whether Bayley Scales of Infant and Toddler Development (3rd edition) (Bayley-III) motor scores and neurological examination at 2 years corrected age predict motor difficulties at 4.5 years corrected age.
  
  
  METHODS
  A prospective cohort study of children born at risk of neonatal hypoglycaemia in Waikato Hospital, Hamilton, New Zealand. Assessment at 2 years was performed using the Bayley-III motor scale and neurological examination, and at 4.5 years using the Movement Assessment Battery for Children (2nd edition) (MABC-2).
  
  
  RESULTS
  Of 333 children, 8 (2%) had Bayley-III motor scores below 85, and 50 (15%) had minor deficits on neurological assessment at 2 years; 89 (27%) scored less than or equal to the 15th centile, and 54 (16%) less than or equal to the 5th centile on MABC-2 at 4.5 years. Motor score, fine and gross motor subtest scores, and neurological assessments at 2 years were poorly predictive of motor difficulties at 4.5 years, explaining 0 to 7% of variance in MABC-2 scores. A Bayley-III motor score below 85 predicted MABC-2 scores less than or equal to the 15th centile with a positive predictive value of 30% and a negative predictive value of 74% (7% sensitivity and 94% specificity).
  
  
  CONCLUSIONS
  Bayley-III motor scale and neurological examination at 2 years were poorly predictive of motor difficulties at 4.5 years.
authors.affiliation: Liggins Institute, University of Auckland, Auckland, New Zealand.
authors.forename: Nataliia
authors.initials: N
authors.lastname: Burakevych
authors.affiliation: Liggins Institute, University of Auckland, Auckland, New Zealand.|Department of Paediatrics: Child and Youth Health, University of Auckland, Auckland, New Zealand.
authors.forename: Christopher Joel Dorman
authors.initials: CJ
authors.lastname: Mckinlay
authors.affiliation: Liggins Institute, University of Auckland, Auckland, New Zealand.|Department of Paediatrics: Child and Youth Health, University of Auckland, Auckland, New Zealand.
authors.forename: Jane Marie
authors.initials: JM
authors.lastname: Alsweiler
authors.affiliation: Department of Psychological Medicine, University of Auckland, Auckland, New Zealand.
authors.forename: Trecia Ann
authors.initials: TA
authors.lastname: Wouldes
authors.affiliation: Liggins Institute, University of Auckland, Auckland, New Zealand.
authors.forename: Jane Elizabeth
authors.initials: JE
authors.lastname: Harding
mesh_terms: D002657:Child Development; D002675:Child, Preschool; D015331:Cohort Studies; D002658:Developmental Disabilities / Q000175:diagnosis*; D005260:Female; D006801:Humans; D016014:Linear Models; D008297:Male; D009048:Motor Skills / Q000502:physiology*; D009068:Movement; D009460:Neurologic Examination; D009483:Neuropsychological Tests