title: Changes in post-traumatic symptom pattern during and after exposure to extreme war stress: an uncontrolled, preliminary study supporting the dose-response model.
abstract: BACKGROUND
  Exposure to prolonged war stress is understudied. While there is debate regarding the empirical data of the dose-response model for posttraumatic stress disorder (PTSD), little is known about how weekly changes in external stress influences the level of PTSD symptoms. The purpose of this study was to measure the relation between objective external stress and PTSD symptoms across time, and thus, gain a deeper understating of the dose-response model.
  
  
  OBJECTIVE
  The study hypothesis postulates that the more severe the external stressor, the more severe the exhibition of traumatic symptoms.
  
  
  METHODS
  Thirteen special army administrative staff (SAAS) members from the Rambam Medical Center in Haifa attended seven intervention meetings during the war. These personnel answered a battery of questionnaires regarding demographics and PTSD symptoms during each session. A non-parametric test was used in order to measure the changes in PTSD symptoms between sessions. Pearson correlations were used in order to study the relationship between the magnitude of external stressors and the severity of PTSD symptoms.
  
  
  RESULTS
  The results suggested that there was a significant relationship between the magnitude of external stressors and the severity of PTSD symptoms. These results are in line with the dose-response model.
  
  
  CONCLUSIONS
  The results suggest that a pattern of decline in PTSD symptoms confirm the dose-response model for PTSD.
authors.affiliation: School of Social Work, Ariel University Center of Samaria. menbe@ariel.ac.il
authors.forename: Menachem
authors.initials: M
authors.lastname: Ben-Ezra
authors.forename: Yuval
authors.initials: Y
authors.lastname: Palgi
authors.forename: Amit
authors.initials: A
authors.lastname: Shrira
authors.forename: Dina
authors.initials: D
authors.lastname: Sternberg
authors.forename: Nir
authors.initials: N
authors.lastname: Essar
mesh_terms: D000223:Adaptation, Psychological; D000293:Adolescent; D000328:Adult; D004781:Environmental Exposure / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007557:Israel / Q000453:epidemiology; D008297:Male; D008889:Military Personnel; D008890:Military Psychiatry; D008960:Models, Psychological; D011594:Psychometrics; D012307:Risk Factors; D012720:Severity of Illness Index; D013223:Statistics as Topic; D013313:Stress Disorders, Post-Traumatic / Q000453:epidemiology / Q000209:etiology*; D013315:Stress, Psychological / Q000150:complications*; D011795:Surveys and Questionnaires; D013997:Time Factors; D014857:Warfare; D055815:Young Adult