title: The factor structure of the Hospital Anxiety and Depression Scale in acquired brain injury.
abstract: OBJECTIVE
  To evaluate the factor structure of the Hospital Anxiety and Depression Scale (HADS) as a mood assessment in a sample of individuals with acquired brain injury (ABI).
  
  
  METHODS
  Cohort study.
  
  
  METHODS
  HADS data from 140 people with ABI was subjected to principle components analysis (PCA).
  
  
  METHODS
  None.
  
  
  RESULTS
  A three-factor solution emerged. Items loading on the first two factors map on to the anxiety and depression scales. However, two items from the depression sub-scale did not load significantly on either of these two main factors. Possible reasons are discussed.
  
  
  CONCLUSIONS
  This study suggests that the HADS is a useful tool for examining depression and anxiety in a brain injured population, but interpretation of responses to some items should be cautious.
authors.affiliation: The Oliver Zangwill Centre for Neuropsychological Rehabilitation, Princess of Wales Hospital, Ely, Cambridgeshire, UK.
authors.forename: Naomi
authors.initials: N
authors.lastname: Dawkins
authors.forename: Monique E
authors.initials: ME
authors.lastname: Cloherty
authors.forename: Fergus
authors.initials: F
authors.lastname: Gracey
authors.forename: Jonathan J
authors.initials: JJ
authors.lastname: Evans
mesh_terms: D000293:Adolescent; D000328:Adult; D001008:Anxiety Disorders / Q000175:diagnosis* / Q000209:etiology; D001930:Brain Injuries / Q000523:psychology*; D015331:Cohort Studies; D003866:Depressive Disorder / Q000175:diagnosis* / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D025341:Principal Component Analysis; D011569:Psychiatric Status Rating Scales; D011594:Psychometrics