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Table 3 Adjusted Odds of Posttraumatic Stress Disorder from a Reduced Multivariable Logistic Regression Model

From: Risk Factors for Posttraumatic Stress Disorder Among Deployed US Male Marines

  Study Population
N= 706
  OR (95% CI)
Baseline characteristic   
Prior Violence Exposures   
   0 1.00  
   1 1.96 (0.99-3.85)
   2-7 2.99 (1.46-6.10)
Follow-up and deployment characteristics   
Number of close friends/relatives you can confide in   
   0-2 1.80 (0.96-3.36)
   3-4 1.00  
   5 or more 0.26 (0.12-0.59)
Enlisted pay grade   
   Junior enlisted (E1-E3) 2.15 (1.20-3.85)
   Noncommissioned officer (E4-E5) 1.00  
Number of deployments   
   1 1.00  
   2 1.91 (1.10-3.33)
Shot or seriously injured   
   No 1.00  
   Yes 3.51 ( 1.58-7.77 )
Felt in great danger of being killed   
   Never/once/few times 1.00  
   Often/very often 4.63 (2.46-8.73)
Personally saw someone wounded, killed, or dead   
   No 1.00  
   Yes 2.47 (1.08-5.67)
  1. Note. Odds ratios (OR) and associated 95% confidence intervals (CI) are adjusted for all other variables in the table.
  2. aPosttraumatic stress disorder based on PTSD Patient Checklist-Civilian Version with Diagnostic and Statistical Manual of Mental Disorders, 4th Edition criteria and a sum of 50 points out of 85 points possible on the follow-up questionnaire. Model fit by R2 = 0.851