title: The Development and Psychometric Evaluation of a Supplementary Index Score of the Neuropsychological Assessment Battery Screening Module that is Sensitive to Traumatic Brain Injury.
abstract: OBJECTIVE
  This study examines the validity of the NAB Screening Module (screening module of the neuropsychological assessment battery, S-NAB) in an acute traumatic brain injury (TBI) inpatient population and provides psychometric evaluation of an original index sensitive to TBI impairment.
  
  
  METHODS
  The utility of the S-NAB as a TBI screen was examined using a between groups design. One-hundred and four patients with mild complicated to severe TBI were recruited from a consecutive cohort of patients admitted as inpatients to a UK Major Trauma Centre. Ninety-eight control participants were selected from the S-NAB normative sample. All TBI patients completed the S-NAB during their inpatient stay.
  
  
  RESULTS
  Control participants scored significantly higher than TBI participants on the Total Screening index (t = 3.626, p < 0.01), The Attention index (t = 7.882, p < 0.01), and the Executive index (t = 5.577, p < 0.01). A briefer TBI Impairment index of six subtests was constructed which accurately discriminated TBI patients from normative controls (t = 9.9, p < 0.01; Cohen's d = 1.54). The TBI index had excellent classification accuracy (AUC = 0.83), superior to that of the standard S-NAB indices. The TBI Index, Attention Index, and Total Screening Index demonstrated increasing impairment with increased severity of injury.
  
  
  CONCLUSIONS
  The S-NAB TBI index is a robust, reliable screening index for use with acute TBI patients, which is sensitive to the effects of acute TBI. It affords a briefer cognitive screen than the S-NAB and demonstrates a dose response relationship to TBI severity.
authors.affiliation: Clinical Neuropsychology Department, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.
authors.forename: David
authors.initials: D
authors.lastname: Hacker
authors.affiliation: Clinical Neuropsychology Department, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.|School of Psychology, The University of Birmingham, Birmingham, UK.
authors.forename: Christopher A
authors.initials: CA
authors.lastname: Jones
authors.affiliation: Clinical Neuropsychology Department, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.
authors.forename: Zoe
authors.initials: Z
authors.lastname: Clowes
authors.affiliation: Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust.
authors.forename: Antonio
authors.initials: A
authors.lastname: Belli
authors.affiliation: School of Clinical and Experimental Medicine, University of Birmingham, Birmingham, UK.|Clinical Neurosciences, Institute of Brain, Behaviour and Mental Health, University of Manchester, UK.
authors.forename: Zhangjie
authors.initials: Z
authors.lastname: Su
authors.affiliation: Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust.
authors.forename: Murugan
authors.initials: M
authors.lastname: Sitaraman
authors.affiliation: Department of Neurosurgery, University Hospitals Birmingham NHS Foundation Trust.
authors.forename: David
authors.initials: D
authors.lastname: Davies
authors.affiliation: Clinical Neuropsychology Department, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.
authors.forename: Ross
authors.initials: R
authors.lastname: Taylor
authors.affiliation: Department of Occupational Therapy, University Hospitals Birmingham NHS Foundation Trust, UK.
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Flahive
authors.affiliation: Department of Occupational Therapy, University Hospitals Birmingham NHS Foundation Trust, UK.
authors.forename: Clare
authors.initials: C
authors.lastname: Travis
authors.affiliation: Department of Occupational Therapy, University Hospitals Birmingham NHS Foundation Trust, UK.
authors.forename: Nicci
authors.initials: N
authors.lastname: O'Neil
authors.affiliation: Department of Occupational Therapy, University Hospitals Birmingham NHS Foundation Trust, UK.
authors.forename: Yvonne
authors.initials: Y
authors.lastname: Pettigrew
mesh_terms: D000328:Adult; D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis / Q000209:etiology; D000070642:Brain Injuries, Traumatic / Q000150:complications* / Q000523:psychology*; D003072:Cognition Disorders / Q000175:diagnosis* / Q000209:etiology*; D015331:Cohort Studies; D056344:Executive Function / Q000502:physiology; D005260:Female; D023261:Glasgow Outcome Scale; D006801:Humans; D016015:Logistic Models; D008297:Male; D008403:Mass Screening; D008568:Memory / Q000502:physiology; D008875:Middle Aged; D009483:Neuropsychological Tests; D012372:ROC Curve; D012720:Severity of Illness Index
keywords: Neuropsychological assessment; Neuropsychological assessment battery; Screening test; Traumatic brain injury