title: A population survey found an association between self-reports of traumatic brain injury and increased psychiatric symptoms.
abstract: OBJECTIVE
  This study determined whether self-reported Traumatic Brain Injury (TBI), identified in a community sample and occurring up to 60 years previously, is associated with current psychiatric symptoms, suicidality, and psychologic well-being.
  
  
  METHODS
  Three age cohorts (20-24, 40-44, 60-64) were randomly sampled from the cities of Canberra and Queanbeyan, Australia, yielding a total of 7,485 participants. The samples were administered scales measuring anxiety, depression, suicidality, positive and negative affect, personality traits, and physical health status.
  
  
  RESULTS
  Of the total sample, 5.7% reported history of TBI involving loss of consciousness for at least 15 min, occurring an average of 22 years previously. History of TBI was associated with increased symptoms of depression, anxiety, negative affect, and suicidal ideation.
  
  
  CONCLUSIONS
  History of TBI is a risk factor for psychiatric morbidity. The effect is greatest in young adults, and occurs up to several decades subsequent to the occurrence of TBI.
authors.affiliation: Centre for Mental Health Research, Australian National University, Canberra, ACT 0200, Australia. kaarin.anstey@anu.edu.au
authors.forename: Kaarin J
authors.initials: KJ
authors.lastname: Anstey
authors.forename: Peter
authors.initials: P
authors.lastname: Butterworth
authors.forename: Anthony F
authors.initials: AF
authors.lastname: Jorm
authors.forename: Helen
authors.initials: H
authors.lastname: Christensen
authors.forename: Bryan
authors.initials: B
authors.lastname: Rodgers
authors.forename: Timothy D
authors.initials: TD
authors.lastname: Windsor
mesh_terms: D000328:Adult; D001007:Anxiety / Q000209:etiology; D001930:Brain Injuries / Q000523:psychology*; D003863:Depression / Q000209:etiology; D005260:Female; D006304:Health Status; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000209:etiology*; D008875:Middle Aged; D009104:Multiple Trauma / Q000523:psychology*; D012307:Risk Factors; D013405:Suicide