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Table 1 Characteristics for the two groups (loss of consciousness for more than 12 hours or less than one hour).

From: Posttraumatic Stress Disorder in patients with traumatic brain injury

  group con (N = 15) group uncon (N = 31) statistical difference
Age 41.2 35.7 n.s.
WMS-6 (mean of percentile rank) 35.9 45.8 n.s.
Severity of injury (AIS) 11.0 21.3 P =.002 (Mann-Whitney-U = 103)
Reexperiencing symptoms (PDS Score) 6.53 2.46 P =.005 (Mann-Whitney-U = 101)
Avoidance symptoms (PDS) 6.53 6.3 n.s.
Arousal symptoms (PDS) 6.33 5.3 n.s.
HSCL anxiety 2.15 1.67 P =.03 (Mann-Whitney-U = 138)
HSCL depression 1.77 1.74 n.s.
Proportion PTSD (SCID) 26.7% (N = 4) 3.2% (N = 1) P =.017 (Chi-Sq. = 5.733)
Occurrence of intrusions 66.7% (N = 10) 25.8% (N = 8) P =.008 (Chi-Sq. = 7.086)