I've been wanting Freakonomics (or anyone, really) to systematically contrast death rates of more-powerful v.s. less-powerful parties* after it has become known

I've been wanting Freakonomics (or anyone, really) to systematically contrast death rates of more-powerful v.s. less-powerful parties* after it has become known that the more-powerful party has become significantly aggrieved by the less-powerful one. *if it's possible -- I'm not certain that it is