Well, right, that's what hospital administrators claim, but that "evidence" is rarely statistically rigorous.^^^ Evidence-based, right?
One of the things that I find most distressing about medical research is the paucity of statistics understanding at the fundamental level by the principal investigators. The world needs hundreds of times more graduate-level trained statisticians in my opinion. It's amazing we don't kill more people as a result of poor statistical analysis of medical trials.