there are bound to be some countries that either don't know, or don't wantto divulge, the true figures. Somalia and Russia, for example.
In some cases it might trigger a change in the sysyem of government.
European countries are, I think, comparable, especially the Western parts of the EU where living conditions, prosperity and health systems are not a million miles apart.
You can reasonably look at UK, France, Holland, Germany, Italy and Spain, and see what the differences are.