Creating Practice Guidelines: The Dangers of Over-Reliance on Expert Judgment

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Abstract
Discussions about the role of practice guidelines and the strength of the evidence on which they are based should begin with a set of more basic questions: What is the function of such guidelines and what forces shape their use?At least two forces can be seen behind the press for guidelines. On the one hand, guidelines can be used to improve the quality of care by raising the general level of practice to meet at least the standards set by experts. At the other, they become vehicles for cost containment.By international standards, the United States spends a disproportionate share of its gross domestic product on health care. The majority of spending increases are traceable to the growth in technology. Whether couched as a concern that resources could be better used to provide other parts of the population with more effective health care or as a general concern that money spent on health might be better used for other social goods, a notion exists that less is better.