title: Posttraumatic stress symptoms and salivary cortisol levels.
abstract: OBJECTIVE
  This study assessed the relationship between posttraumatic stress symptoms and salivary cortisol levels after a severe ice storm.
  
  
  METHODS
  Posttraumatic stress symptoms (Impact of Event Scale scores) and salivary cortisol levels were determined in 115 victims of an ice storm and in 27 healthy comparison subjects 1 month and approximately 1 year after the ice storm.
  
  
  RESULTS
  One month after the storm, Impact of Event Scale scores for the victims (mean=20.31, SD=15.23) exceeded those of the comparison subjects (mean=5.30, SD=9.78) but were reduced approximately 1 year later (mean=14.01, SD=13.68). A quadratic relation was found to exist between Impact of Event Scale scores and cortisol levels.
  
  
  CONCLUSIONS
  One month after the storm, cortisol levels were found to be elevated among the victims but were diminished among those with the highest Impact of Event Scale scores. This relationship was found not to exist approximately 1 year later.
authors.affiliation: Institute of Neuroscience, Carleton University, Ottawa, Ontario, Canada. hanisman@ccs.carleton.ca
authors.forename: H
authors.initials: H
authors.lastname: Anisman
authors.forename: J
authors.initials: J
authors.lastname: Griffiths
authors.forename: K
authors.initials: K
authors.lastname: Matheson
authors.forename: A V
authors.initials: AV
authors.lastname: Ravindran
authors.forename: Z
authors.initials: Z
authors.lastname: Merali
mesh_terms: D004190:Disasters; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006854:Hydrocortisone / Q000032:analysis* / Q000378:metabolism; D008016:Life Change Events; D008297:Male; D008875:Middle Aged; D011569:Psychiatric Status Rating Scales / Q000706:statistics & numerical data; D012463:Saliva / Q000737:chemistry*; D013313:Stress Disorders, Post-Traumatic / Q000175:diagnosis* / Q000378:metabolism
chemical_list: D006854:Hydrocortisone