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Words without action? The production, dissemination, and impact of consensus recommendations.

When existing evaluations find little or no evidence of consensus recommendations leading to action, one can justifiably ask why so much of this review was dedicated to analyzing alternative ways of producing such "words without action." There are, however, at least two reasons why consensus recommendations should be produced with care and attention to validity. First, recommendations do sometimes have an impact on behavior as a consequence of mere dissemination activity--the Dutch program, for instance, was more successful than most. This success may occur when the target audience is already particularly receptive to change and the message is timely and delivered by a credible source in a clinically relevant way. Thus, although "such a conjunction of favorable conditions is probably the exception rather than the rule for consensus topics" (46, 240) it does happen. Second, the output from consensus processes is increasingly a potential input to other processes. Consensus recommendations can be used as the criteria for evaluation and appraisal aimed at changing practice behavior, making administrative decisions on resource allocation, or defining research protocols. For instance, quality assurance activities, such as peer assessment, practitioner certification, or utilization review, are actively seeking criteria with which to make judgments and elicit changes in practice to improve the quality of care. Funding agencies are looking for information to help make reimbursement, capital expenditure, or fee-for-service decisions on cessation of insurance for particular procedures or approaches. These uses of the consensus criteria are potentially major and controversial. Therefore, even if dissemination rarely leads to action, consensus processes should still be done carefully and with valid techniques. The use of their recommendations embedded within other activities may well lead to (forced) changes in behavior. On ethical grounds alone, we should be as sure as possible that the behavior changes being implied and encouraged are indeed advisable. For these reasons, the review describes the decision points in the production process for consensus recommendations as a start on the development of a set of recognized standards. The review offers a critical appraisal of the various methodological choices available at each decision point. The seven decision points are selecting a topic, picking the consensus group, providing background preparation, identifying information inputs, choosing a group judgment process, defining the criteria for recommendations, and choosing a report preparation procedure and format. At least two important points emerged from this review. First, the research is often not well enough developed to give clear indications for many of the choices on what is the "best" alternative.(ABSTRACT TRUNCATED AT 400 WORDS)

Canada

Acoustic neuroma.

The National Institutes of Health Consensus Development Conference on Acoustic Neuroma brought together neurosurgeons, radiosurgeons, otologists, neurologists, audiologists, otolaryngologists, and other health care professionals as well as the public to reach agreement (1) on defining the clinical types of acoustic neuroma, (2) on which procedures are useful for screening and diagnosis, (3) on the options available for managing the disorder as well as the complications of treatment, and (4) on the key clinical and biological areas for future research. Following 2 days of presentations by experts and discussion by the audience, a consensus panel weighed the evidence and prepared their consensus statement. Among their findings, the panel concluded that (1) the term vestibular schwannoma is preferred over acoustic neuroma as these tumors are composed of Schwann cells and typically involve the vestibular rather than the acoustic division of the 8th cranial nerve; (2) treatment for vestibular schwannoma must be individualized and requires an experienced, well-integrated, multidisciplinary team approach; (3) surgery remains the treatment of choice, but research is needed on the relative benefits and risks of all management options, including pharmaceutical and other alternative medical treatments such as tumor suppressing agents; (4) routine intraoperative monitoring of the facial nerve should be included in surgical therapy for vestibular schwannoma; (5) neurofibromatosis 2 (NF2) should be carefully considered in all patients newly diagnosed with vestibular schwannoma, and, when found, genetic evaluation and counseling should be provided for all relevant family members; and (6) a registry for all patients with vestibular schwannoma, whether undergoing observation or active management, should be established.

Forecasting

Chemoprevention of prostate cancer: guidelines for possible intervention strategies.

The "natural history" of prostate cancer may bedevil the development of guidelines for chemoprevention interventions. Can strategies be designed to direct agents to those lesions which have the potential to develop localized extension that may become symptomatic or metastatic disease? Of necessity our interventions will focus on the identification and quantification of appropriate biomarkers as intermediate endpoints, although no reliable endpoints for prostate cancer have yet been identified. The reduction of prostate cancer incidence may be the ultimate objective, but a decrease in the progression of microfocal or "latent" cancer may well be just as effective as prevention when the age of the target population and competing causes of death are taken into account. Early intervention strategies must focus on the analysis of the interactions of the chosen chemopreventive agents upon precancerous and cancerous cellular dynamics in the prostate. Whether the requirements of such molecular epidemiology necessitate a more deliberate strategy of Phase II studies or a high risk-high gain strategy of a broad Phase III study is open to debate. Factorial designs for proposed randomized chemoprevention trials may be desirable to test multiple chemopreventive agents simultaneously, provided knowledge of the biochemical synergism of the agents is solid. Stratification of study participants by degree of risk will ameliorate concerns regarding the precision targeting of lesions at different stages in the precancer/cancer continuum.

Androstenes

The epistemology and ethics of consensus: uses and misuses of 'ethical' expertise.

In this paper I examine the epistemology and ethics of consensus, focusing on the ways in which decision makers use/misuse ethical expertise. The major questions I raise and tentative answers I give are the following: First, are the 'experts' really experts? My tentative answer is that they are bona fide experts who often represent specific interest groups. Second, is the experts' authority merely epistemological or is it also ethical? My tentative answer is that the experts' authority consists not only in their command over specific matters of fact and/or value, but also in their ability to achieve 'consensus' about what is 'true'/'false', or 'right'/'wrong'. Third, should the authority of expertise be limited? My tentative answer is that it should be limited in the area of facts but especially in the area of values. Persons who are ethics 'experts' must be particularly careful to practice an ethics of persuasion rather than an ethics of compulsion. Their role is not to force their group consensus upon decision makers' individual moral perceptions and deliberations; rather it is to help decision makers come to their own conclusions about what they ought to do.

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