Posttraumatic stress disorder in Longmenshan adolescents at three years after the 2013 Lushan earthquake

Objective: This study aimed to estimate the prevalence and risk factors of probable posttraumatic stress disorder (PTSD) among adolescent survivors of the 2013 Lushan earthquake. Methods: A cross-sectional survey was conducted in the Longmenshan thrust fault area at three years after the 2013 earthquake in Lushan, China. Most respondents (60.8%) had also been exposed to the 2008 Wenchuan earthquake. Probable PTSD was identified based on the Children's Revised Impact of Event Scale (CRIES-13), the Adolescent Self-Rating Life Events Checklist and Earthquake Experience Scale. Logistic regression was used to identify risk factors of probable PTSD. Results: Probable PTSD prevalence was 14.1% among all respondents (n = 3851), 15.9% among those who had been exposed to the 2008 and 2013 earthquakes (n = 2342) and 11.3% among those who had experienced only the 2013 earthquake (n = 1509). Earthquake-related factors most strongly associated with probable PTSD were feeling scared of dying and exposure to the Wenchuan earthquake. The negative life event most strongly associated with probable PTSD was academic stress. Conclusion: Among survivors of the 2013 Lushan earthquake, risk of probable PTSD was significantly higher if the person had also been exposed to the Wenchuan earthquake. Researchers and health care workers should pay more attention to adolescent earthquake survivors, especially those who experienced both the Wenchuan and Lushan earthquakes. Providing psychological care and preventing negative events may be effective measures for reducing PTSD after an earthquake.