• Journal Article

Do currently recommended Bayley-III cutoffs overestimate motor impairment in infants born

Citation

Duncan, A. F., Bann, C., Boatman, C., Hintz, S. R., Vaucher, Y. E., Vohr, B. R., ... Heyne, R. J. (2015). Do currently recommended Bayley-III cutoffs overestimate motor impairment in infants born. Journal of Perinatology, 35(7), 516-521. DOI: 10.1038/jp.2014.243

Abstract

Objective:To determine whether a Bayley-III motor composite score of 85 may overestimate moderate-severe motor impairment by analyzing Bayley-III motor components and developing cut-point scores for each.Study Design:Retrospective study of 1183 children born <27 weeks gestation at NICHD Neonatal Research Network centers and evaluated at 18-22 months corrected age. Gross Motor Function Classification System determined gross motor impairment. Statistical analyses included linear and logistic regression and sensitivity/specificity.Results:Bayley-III motor composite scores were strong indicators of gross/fine motor impairment. A motor composite cut-point of 73 markedly improved the specificity for identifying gross and/or fine motor impairment (94% compared with a specificity of 76% for the proposed new cut-point of 85). A Fine Motor Scaled Score <3 differentiated mild from moderate-severe fine motor impairment.Conclusions:This study indicates that a Bayley-III motor composite score of 85 may overestimate impairment. Further studies are needed employing term controls and longer follow-up.Journal of Perinatology advance online publication, 29 January 2015; doi:10.1038/jp.2014.243