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Variations research is one important strategy in the quality management movement designed to improve the quality of health care and to control costs. Information systems are being utilized in variations research to provide an array of potential variables, to provide measures of the variability inherent in these variables, and to assist with the study of the linkages of patient and provider characteristics with interventions and outcomes. This article presents a [...]

Evaluators must develop methods to characterize the use of the rapidly proliferating electronic networks that link patients with health services. In this article the 4-S framework is proposed for characterizing the use of health services delivered via computer networks. The utility of the 4-S framework is illustrated using data derived from a completed, randomized field experiment in which 47 caregivers of persons who had Alzheimer's disease accessed ComputerLink, a special [...]

Health care delivery systems and organizations around the world are undergoing reorganization and reengineering. Rational decision making about such activities must be based on information. Much of the presently available data is inadequate for this task, and therefore needs to be transformed. One such experience in the province of Alberta, Canada, is discussed. The development of a comprehensive information strategy, the need to apply information management principles, the organizational implications [...]

Conceptual models for diagnostic reasoning proposed in the medical literature are presented to stimulate discussion about the issue of the appropriateness of probabilistic knowledge-based systems for medical diagnosis. Evidence is presented to corroborate the authors' view that diagnosis is a problem-solving task, rather than a decision-making task. In the authors' opinion, probabilistic reasoning is better suited to situations dealing with choices for clinical intervention, rather than to those dealing with [...]

From my viewpoint as a patient, 1. Medical knowledge has expanded to the point that individuals cannot adequately improve quality without the assistance of computer programs. 2. The medical profession must concentrate on why and how computer program projects must be used, not on why they cannot be used. 3. The successful application of computer programs to clinical medicine is dependent mainly on the efforts of individual institutions and people [...]

Develop a model for structured and encoded representation of medical information that supports human review, decision support applications, ad hoc queries, statistical analysis, and natural-language processing.

Evaluate the performance of a continuous-speech interface to a decision support system.