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We are interested in understanding the causes of post-traumatic stress disorder (PTSD) among police officers. We...

We are interested in understanding the causes of post-traumatic stress disorder (PTSD) among police officers. We draw a sample of 100 officers from an urban police department and collect three pieces of information:


a) Whether they have or are currently experiencing the symptoms of PTSD
b) The number of years they have been on the police force
c) Whether or not they used their firearm to shoot someone during their duties

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