There was a substantial burden of psychological consequences of the March 11, 2004 terrorist attacks two months after the event. Persons with prior mental illness are at higher risk of post-event psychopathology, across groups of exposure.

The prevalence of PTSD symptoms was high and remained stable between Month 1 and Month 6, while subjective perception of health improved significantly.

Two months after the event, the prevalence of mental disorders among both injured and residents was higher than expected levels at baseline conditions. Eighteen months after the event, psychopathological conditions did not change significantly among the injured but returned to the expected baseline rates among community residents.

No abstract