title: PTSD comorbidity and suicidal ideation associated with PTSD within the Ohio Army National Guard.
abstract: OBJECTIVE
  To study the relation between posttraumatic stress disorder (PTSD) psychiatric comorbidity and suicidal ideation in a representative sample of Ohio Army National Guard soldiers.
  
  
  METHODS
  Using retrospective data collected on the telephone from a random sample of 2,616 National Guard soldiers who enrolled in a 10-year longitudinal study (baseline data collected November 2008-November 2009), we examined (1) the prevalence of other psychopathologies among those with DSM-IV-diagnosed PTSD compared to those without PTSD and (2) the association between PTSD comorbidity and suicidal ideation (reporting thoughts of being better off dead or hurting themselves). All analyses were carried out using logistic regression.
  
  
  RESULTS
  Of guard members with PTSD in the last year, 61.7% had at least 1 other psychopathology; 20.2% had at least 2 other co-occurring conditions. The most common co-occurring psychopathology was depression. While those with PTSD overall were 5.4 (95% CI, 3.8-7.5) times more likely to report suicidality than those without PTSD, those who had at least 2 additional conditions along with PTSD were 7.5 (95% CI, 3.0-18.3) times more likely to report suicidal ideation at some point in their lifetime than those with PTSD alone.
  
  
  CONCLUSIONS
  Soldiers with PTSD were at increased risk for suicidality, and, among those with PTSD, those with at least 2 additional conditions were at the highest risk of suicidal ideation. Future research should address the mechanisms that contribute to multimorbidity in this population and the appropriate treatment methods for this high-risk group.
authors: Department of Psychiatry, University Hospitals Case Medical Center, Case Western Reserve University, Cleveland, Ohio, USA. joseph.calabrese@UHhospitals.org
authors: Joseph R
authors: JR
authors: Calabrese
authors: Marta
authors: M
authors: Prescott
authors: Marijo
authors: M
authors: Tamburrino
authors: Israel
authors: I
authors: Liberzon
authors: Renee
authors: R
authors: Slembarski
authors: Emily
authors: E
authors: Goldmann
authors: Edwin
authors: E
authors: Shirley
authors: Thomas
authors: T
authors: Fine
authors: Toyomi
authors: T
authors: Goto
authors: Kimberly
authors: K
authors: Wilson
authors: Stephen
authors: S
authors: Ganocy
authors: Philip
authors: P
authors: Chan
authors: Mary Beth
authors: MB
authors: Serrano
authors: James
authors: J
authors: Sizemore
authors: Sandro
authors: S
authors: Galea
mesh_terms: D000293:Adolescent; D000328:Adult; D000437:Alcoholism / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D015331:Cohort Studies; D015897:Comorbidity; D003430:Cross-Sectional Studies; D003865:Major Depressive Disorder / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D006801:Humans; D008016:Life Change Events; D008297:Male; D008875:Middle Aged; D008889:Military Personnel / Q000523:psychology* / Q000706:statistics & numerical data*; D009820:Ohio; D010552:Personality Assessment; D011446:Prospective Studies; D012944:Social Support; D013313:Stress Disorders, Post-Traumatic / Q000175:diagnosis* / Q000453:epidemiology* / Q000523:psychology; D059020:Suicidal Ideation; D013405:Suicide / Q000523:psychology; D055815:Young Adult; D000092864:Suicide Prevention