title: Trauma and post-traumatic stress disorder among homeless adults in Sydney.
abstract: OBJECTIVE
  International studies indicate high prevalence rates of post-traumatic stress disorder within homeless populations. In Australia, studies indicate high rates of trauma among homeless adults, yet post-traumatic stress disorder has not been investigated in homeless Australian adults. The primary aim of this project was to determine the prevalence of post-traumatic stress disorder among homeless adults in Sydney. Further, another aim of the study was to determine whether the onset of post-traumatic stress disorder preceded the first episode of homelessness or was a consequence of homelessness.
  
  
  METHODS
  The sample consisted of 70 homeless men and women aged 18-73 years, who were randomly sampled through eight homeless services. A computer-assisted face-to-face structured clinical interview was conducted with each participant. Lifetime prevalence of post-traumatic stress disorder was determined via the Composite International Diagnostic Interview.
  
  
  RESULTS
  The majority of the sample had experienced at least one traumatic event in their lifetime (98%). Indeed, the mean number of traumas per person was six. The 12 month prevalence of post-traumatic stress disorder was higher among homeless adults in Sydney in comparison to the Australian general population (41% vs 1.5%). But 79% of the sample had a lifetime prevalence of post-traumatic stress. In 59% of cases, the onset of post-traumatic stress disorder preceded the age of the first reported homeless episode.
  
  
  CONCLUSIONS
  Homeless adults in Sydney frequently experience trauma and post-traumatic stress disorder. The study found that trauma and post-traumatic stress disorder more often precede homelessness, but re-victimization is common. These findings highlight the high mental health needs among homeless people and have implications for services for homeless people.
authors.affiliation: School of Psychology, University of Sydney, Sydney, NSW, Australia.
authors.forename: Kathryn M
authors.initials: KM
authors.lastname: Taylor
authors.forename: Louise
authors.initials: L
authors.lastname: Sharpe
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001315:Australia / Q000453:epidemiology; D002391:Catchment Area, Health; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D006703:Ill-Housed Persons / Q000523:psychology* / Q000706:statistics & numerical data*; D006801:Humans; D008016:Life Change Events; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012720:Severity of Illness Index; D013313:Stress Disorders, Post-Traumatic / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology*