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Why we know so little about ACOs: The managed care culture at work
The Health Care Blog

This is the third essay in a three-part series in which I explore the answer to that question. In the first installment I blamed this problem on the flimsy definition of “ACO.” ACO proponents “defined” the ACO in terms of their hopes for it, not in terms of the mechanisms ACOs would use to accomplish those hopes.

In the second installment I reviewed a paper published by the Center for Health Care Strategies (CHCS) to document my statement that we have no useful information on ACOs and to illustrate the quandary the hope-based “definition” of “ACO” creates for researchers.