Mott the Hoople
Sweet Jane
You make some good points but it still weakens the scientific validity of the polls. The sample is still selecting itself, the doctors mostly likely to respond are the specialist who would be most negatively impacted economically. How do we know the generalist, who are in the most demand and have the most to gain by reform were adequately represented in this sampling.Actually, this is not exactly correct... I agree that they can be suspect, but they can also be valuable pieces of information. The less respondents among the randomly selected group would increase the margin of error in the poll, and particularly on this one, "responses are still coming in" yet they published. However, it is a random selection of doctors, not "man on the street" and the validity can be mathematically figured in a case where there are a limited number of respondents.
http://journalism.wlu.edu/J203/polls.htm
Now, had they put it as an ad in a magazine or something (like an online poll that anybody could stumble upon) rather than selected people who were doctors randomly as they did it would be even more suspect and validity would be impossible.
I can tell you from my own personal experience that most generalist, internist, optomotrist, chiropractors, podiatrist have much to gain from reform as Insurance companies have selectively cut them out of the economic pie in favor of medical specialist who often are more invasive, less affective and certainly far more costly then more conservative treatment and modalities.
Many people, because of our present system and due to limited economic resource bizarrely find themselves in a position where often they could obtain less costly and more affective conservative treatment for their health issues but often have to go the route of more costly specialist because insurance won't cover the conservative treatment but will cover treatment from a specialist. Often they have to wait until an easily treatable chronic condition becomes an accute condition before then can obtain treatment because insurance won't cover the conservative care for chronic conditions but, again bizzarely, will cover the more costly and invasive specialist treatment for acute conditions.