title: Reliability, sensitivity and responsiveness of the Infant Behavioral Assessment in very preterm infants.
abstract: OBJECTIVE
  The aim of this study is to investigate the reliability, sensitivity and responsiveness of the Infant Behavioral Assessment (IBA) to evaluate neurobehavioural organization in very preterm infants.
  
  
  METHODS
  Videotaped assessments of very preterm infants participating in a recent trial served to evaluate a standardized IBA observation. Inter-rater reliability was based on 40 videos scored by two independent observers, using percentage agreement and weighted Kappa's. Sensitivity was evaluated by comparing the IBA results of 169 infants at 35-38 weeks postmenstrual age, dichotomized according to two developmental risk factors. For responsiveness, the effect size (ES) was calculated between 0 and 6 months corrected age in all intervention and control infants and in subgroups of high-risk intervention and control infants with oxygen dependency ≥28 days.
  
  
  RESULTS
  Inter-rater agreement was 93% in the total assessment; Kappa agreement was moderate to good in the behavioural categories. Significant differences were found between groups with or without risk factors. Larger differences between ESs in the randomized groups with oxygen dependency ≥28 days than in the total randomized groups reflect the responsiveness of the IBA.
  
  
  CONCLUSIONS
  In this study, we found satisfactory to good clinimetric characteristics of the IBA in very preterm born infants.
authors: Department of Rehabilitation, Academic Medical Center, University of Amsterdam, The Netherlands. k.koldewijn@amc.uva.nl
authors: K
authors: K
authors: Koldewijn
authors: J
authors: J
authors: van Hus
authors: A
authors: A
authors: van Wassenaer
authors: M
authors: M
authors: Jeukens-Visser
authors: J
authors: J
authors: Kok
authors: F
authors: F
authors: Nollet
authors: M-J
authors: MJ
authors: Wolf
mesh_terms: D002657:Child Development; D006801:Humans; D007223:Infant; D018730:Infant Behavior; D007231:Infant, Newborn; D007234:Infant, Premature / Q000523:psychology*; D008297:Male; D015588:Observer Variation; D011581:Psychological Tests; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014741:Video Recording