Objective     To investigate the clinical features and risk factors of acute stress disorder (ASD) in hospitalized patients after traumatic injury.     Methods    A total of 311 patients were enrolled from three 3 A grade hospitals of Chongqing from March 2011 to June 2011 and were tested with Stanford Acute Stress Reaction Questionnaire (SASRQ)

Visual Analogue Scale/Score (VAS)

Social Support Review Survey (SSRS)

Simplified Coping Style Questionnaire (SCSQ) and Eysenck Personality Questionnaire-Revised Short Seale for Chinese (EPQ-RSC). Two hundred and eighty-nine valid questionnaires were obtained.     Results    (1) The positive rate of ASD in trauma patients was 12.46%. The 289 patients included 20.76% of dissociative symptoms

47.4% of anxiety or neuroticism

15.57% avoidance symptoms and 23.18% of trauma recapture symptoms; the female patients were more likely to have ASD than male patients (P0.05). (2) The total score of SASRQ was positively correlated with VAS and neuroticism scores of EPQ-RSC

and the correlation coefficients were 0.532 2 and 0.445 1

respectively. The total score of SASRQ was negatively correlated with extraversion

perceived social support and positive coping style

and the correlation coefficients were -0.340 2

-0.659 1 and -0.409 7

respectively. (3) The VAS

N scale of EPQ-RSC and negative coping style were higher in the ASD-positive group than in the ASD-negative group (P0.05

P0.01)

while the perceived support

support utilization

positive coping style and E scale were lower in the ASD-positive group than in the ASD-negative group.     Conclusion     Hospitalized trauma patients have a relatively high occurrence of ASD

which is associated with strong sense of pain and partial introverted unstable personality. Psychological interventions should be provided as early as possible especially for female trauma patients and patients with severe injury.