Objective   To investigate the prevalence rate and the related risk factors of post traumatic stress disorder (PTSD) in rescue troops in 1 year after Wenchuan earthquake in order to provide scientific evidences for p

sychological health education.    Methods   Interviews and questionnaire

which composed by General State of Health Questionnaire

PTSD Checklist-Civilian Version (PCL-C)

Symptom Checklist-90 (SCL-90)

simple coping style questionnaire(SCSQ) and Eysenck Personality Questionnaire (EPQ)

were used on 1 176 officers/soldiers from rescue troops. The risk factors were analyzed with Logistic regression analysis.    Result   In 1 year after Wenchuan earthquake

the prevalence rate of PTSD was 3.45%

with the average score of every symptom factors less than 2. Compared with the norms of Chinese serviceman

the factors about somzatization in SCL-90

exterior/interior in EPQ and positive response in SCSQ were obviously higher (P0.01). While anxiety and depression in SCL-90

nervousness in EPQ and negative response in SCSQ significantly were lower (P0.01). The difference of total scores of PTSD

the factors about relive

avoidance

depression

anxious

nervousness and response among different rescue troops were significant (P0.05). When total scores of PTSD as dependent variable

the multivariant gradual regressive analysis showed the mainly influence factors in order were anxiety

symptom

nervousness

negative response

exterior/interior (R

2

=0.371

F=125.624

P=0.00).    Conclusion   After the anniversary of earthquake

symptoms of psychological stress in rescue troops become less

and the anxiety and nervousness are the mainly risk factors of PTSD. Positive mental intervention and psychological disposition training are helpful at reducing the incidence of PTSD.