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Cross sectional study.
Phang Nga, Krabi and Phuket provinces of southern Thailand; February 2005 and September 2005.
371 displaced people from Phang Nga and 690 non-displaced people from Phang Nga (4224 deaths) and the lower impact areas of Krabi and Phuket (1000 deaths).
The face-to-face interview consisted of questions from the Harvard Trauma Questionnaire (HTQ) to assess post-traumatic stress disorder (PTSD) symptoms, and the Hopkins Checklist-25 (HSCL-25) to assess anxiety and depression. Surveys were conducted two and nine months after the tsunami.
Symptoms of PTSD (score of 3 or 4 on ⩾1 reoccurring symptom, and on ⩾3 avoidance and numbing symptoms, and on ⩾2 arousal symptoms on the HTQ); anxiety or depression (defined as mean cumulative symptom scores >1.75 on either the anxiety or depression subscales of the HSCL-25).
Follow up period:
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