jsut a quick note to reactivate this thread since a few of us spun off-topic on another thread talking about placebo effects and need to have a place to discuss this.
Eric593, you make a valid point that a placebo in place of warfarin might have just as much anti-clotting effect, but I doubt it. Do you have any information one way or the other about this kind of pysciological effect and placebo? Clotting is a chemical reaction, and without one of the chemicals, it does not take place as effectively. I don't think a placebo would have this same effect. It strikes me as different-in- kind compared to the side effects of pain, or flu-like symptoms.