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Table 1 Demographic and clinical sample characteristics

From: Metabolite profiling in posttraumatic stress disorder

  Controls (N = 18) PTSD (N = 20) Statistic b p -value
N Female (%) 8 (44) 11 (55) Fisher’s exact test .75
Mean Age in Years (SD) 31.06 (10.93) 32.65 (8.46) t df=36 = −.51 .62
N Smoker (%) 11 (61) 12 (60) Fisher’s exact test 1.00
Mean Cigarettes per Day (SD) 5.58 (9.74) 7.72 (13.24) W = 172.50 .82
Region of Origin    Fisher’s exact test .49
N Africa (%) 7 (39) 5 (25)
N Middle East (%) 11(61) 14 (70)
N Southeastern Europe (%) 0 (0) 1 (5)
N Insecure Asylum Status (%)a 7 (39) 20 (100) Fisher’s exact test < .001
Mean Number of CAPS Events (SD) 5.56 (2.94) 8.35 (1.95) t df=36 = −3.50 .001
Mean CAPS Score (SD) 9.11 (15.41) 84.5 (18.55) W = 0.00 < .001
Mean HAM-D Score (SD) 5.59 (6.67) 25.85 (7.26) t df=35 = −8.78 < .001
  1. CAPS, Clinician Administered PTSD Scale; HAM-D, Hamilton Rating Scale for Depression.
  2. aInsecure asylum status refers to legal situations that imply possible deportation.
  3. b t-test for continuous data if test residuals were normally distributed, Mann–Whitney U-test for continuous data if residuals were not normally distributed, and Fisher’s Exact test for categorical data.