Abstract: Objective To study the incidence, character and related risk factors of post trauma stress disorders (PTSD) after road traffic accidents. Methods Inpatients after road traffic accidents from January 2001 to January 2005 were surveyed with self-made questionnaire. The incidence, clinical symptoms and related factors of PTSD were analyzed. Results 156 cases (7.53％) were diagnosed as PTSD among all subjects and their major clinical manifestation including difficulty of falling or staying asleep, compulsion of re-experience traumatic process and excessive startled reactions. The related factors of PTSD including the personality, the degree of education, family harmony and compensation. Conclusion PTSD is common in patients injured in road traffic accidents. Early psychological intervention for susceptible may be needed.

Key words: road traffic accident, post traumatic stress disorder, sleep disturbance, risk factor