[zaarn]

While I generally agree, treating a patient is also not as simple. For example, I never had my tonsils removed and in the past 5 years I have not been sick a single time. Plus, this doesn't invalidate the study itself, as the results merely lay out a chance, the probability that you will suffer long term effects.

People can smoke cigarettes their entire life and never get lung cancer or they smoke once and get a diagnosis for lung cancer next year.