You try as hard as you can to resist the flaw we all have hard-wired into our brains to be receptive to data that fits or affirms preconceptions, and to dismiss or diminish contrary data. This is absolutely one of the biggest problems in the larger health care debate, and the reason why, similarly, any and all anecdotes should be resisted with all our mental might. That's hard to see and nearly impossible to practice.

(Paradoxically, even though those outcomes researchers start from the high position, it's their absence from the front lines that makes them prone to erroneous conclusions.)