• Vicki Anderson, Robyne Le Brocque, Greg Iselin, Senem Eren, Rian Dob, Timothy J Davern, Lynne McKinlay, and Justin Kenardy.
• Critical Care & Neuroscience, Murdoch Childrens Research Institute, Melbourne, Australia. vicki.anderson@rch.org.au
• Disabil Rehabil. 2012 Jan 1;34(19):1639-47.

ContextTraumatic brain injury (TBI) is a common, acquired childhood disability, which has been shown to have a significant impact on children's cognitive and educational function. While behavioral problems are also noted, there is ongoing debate about the contribution of preinjury factors in this domain. Few studies have attempted to measure the impact of these preinjury functions on postinjury behavior.ObjectiveTo compare pre and postinjury adaptive ability, behavior, executive function and quality of life (QOL) and to identify factors that contribute to outcomes in these domains including injury severity, socio-demographic and preinjury characteristics.DesignConsecutive recruitments to a prospective, longitudinal study, utilizing a between factor design, with injury severity as the independent variable.Participants And MethodsChildren admitted to hospital with a diagnosis of TBI aged between 6 and 14 years (n = 205) were divided according to injury severity (mild, moderate and severe). Adaptive behavior (Vineland Adaptive Behavior Scales), child behavior (Child Behavior Checklist), everyday executive functions (Behavior Rating Inventory of Executive Function) and QOL (Child Health Questionnaire) assessed at 6 months post-TBI.Results And ConclusionsSeverity by time interactions were identified across a range of outcome domains demonstrating that more severe injury is associated with a decrease in functional ability at 6 months post-TBI. This effect was most pronounced for everyday executive skills, social function and internalizing aspects of child behavior. Preinjury function was a consistent predictor of postinjury status. Injury severity contributed little to the prediction of functional outcomes once preinjury functioning was accounted for in the model. Age at injury and family cohesion were relevant to specific outcome domains only. Socio-economic status did not contribute significantly to outcome at 6 months. Preinjury functioning as reported by parents in the acute phase may be a useful predictive tool for identifying children who may be at risk of functioning difficulties 6 months post-TBI.

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