how about adding in commonalities? Like gender and race, that affects side effects too. The dosage should also be weighed to size...not just starting dose of X. To have a 300lb man and a 100lb woman on the same drug is going to have different side effects and needs to be part of the equation.

Every Pdoc should know the side effects of every med but most don't they know the ones they most often use and are bias strongly in favor of those they use most. So two pdocs all other things being equal may prescribe different meds for the same person based on their preferred drug of choice.

To me its still a game of chance until drugs are studied by an outside scientific group not related to drug companies and docs are taught that not all classes of drugs are equal for all people.