CAA: Christian Anime Alliance

Was there ever a study done comeparing religion and psychological health, such as Christian, buddists(sp?), muslims, etc.?

I think such a study would be very hard to control for, as I would consider a lot of psychiatric illnesses or other Axis I/II diagnoses to be largely independent of religion. You can have narcissistic people who identify themselves as Jewish, or OCD people who identify themselves as Buddhist, or depressed people who are Christians, or anxious people who are atheist. I guess a better question might be what dimension of behavioural health you were looking at, or whether you were asking more a question of life satisfaction rather than psychiatric diagnosis.

well, what about something like this with airplane crach survivers?
http://www.applesforhealth.com/aircrash1.html
or http://www.sciencedaily.com/releases/1999/08/990824073954.htm
the difference being what they believed in or if anything that they believed and categorized by religion.

Or even those who have a religion verses those who don't?

....Wow.... Awesome question.... No, I don't believe there has been. I would probably be inclined to agree with shooraijin. This would still be a fun thing to research and test out for one's own self, though. If I had the time and ability to do so, I definitely would.