I have probably a couple of comments.
One was that we did take a look at the incidence of suicide among paramedics and compared it to that for the general population. I'm not sure I'm answering your question directly, but the rate of paramedic suicide was over and above that of the general population.
What I think you're alluding to is that there may be people who become paramedics who are already predisposed to that. That is a possibility, but recognizing that there's a differential between the general population and paramedics because of what's happened to paramedics, our belief and our assertion are that the job and all those activities related to the work we do are related to that differential in mental health issues.