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Home » Mental health impact of 9/11 Pentagon attack: Validation of a rapid assessment tool.

Mental health impact of 9/11 Pentagon attack: Validation of a rapid assessment tool.

Abstract Background

Following the tragic events of 9/11/2001, the Pentagon Post Disaster Health Assessment (PPDHA) survey was created to identify healthcare needs and concerns among Pentagon personnel and to assure that appropriate care and information was provided. The PPDHA was fielded from October 15, 2001, to January 15, 2002. Fundamental in this assessment was the evaluation of the mental health impact as a result of the attack.


Although a number of standardized instruments exist for mental health domains, most are lengthy and could not be used as a rapid health assessment. Instead, a short screening instrument consisting of 17 questions was developed that covered important mental health symptom domains, mental health functioning, and possible predictive risk factors. High-risk groups for post-traumatic stress disorder (PTSD), depression, panic attacks, generalized anxiety, and alcohol abuse were assessed, and validation of risk groups was assessed across functional levels.


Overall, 1837 (40%) respondents met the screening criteria for any of the symptom domains of interest 1 to 4 months after the attack: PTSD (7.9%), depression (17.7%), panic attacks (23.1%), generalized anxiety (26.9%), or alcohol abuse (2.5%). Mental health risk groups were highly correlated with self-reported reduced daily functioning and use of counseling services. Additionally, risk factors known to be associated with mental health problems after traumatic events were strongly predictive of the high-risk categories identified.


Mental health concerns were common among Pentagon employees in the 4 months after the 9/11 attack. Data from this study suggested that the short mental health screening instrument had validity and can serve as a prototype for rapid public health assessment of the mental health impact of future traumatic events.

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