This chapter discusses the types of databases available for searching in current information retrieval (IR) systems. Its purpose is not to provide an exhaustive list of electronic databases available for the health care field. Such a task is not feasible for a textbook, because databases undergo constant change, not to mention occasional disappearance. There are several resources, updated annually or more frequently, that catalog on-line databases and describe how they are accessed (Hillstrom, 1993; Marcaccio, 1993). Because of the constant state of change as well as the multitude of vendors who offer access to them, this discussion focuses on those databases that are significant for historical (e.g., they were the first), market-share (e.g., they control the market at the time of this writing), or innovative (e.g., they add a new feature that may benefit the searcher) reasons.
KeywordsCarotid Endarterectomy Bibliographic Database Information Retrieval System Asymptomatic Carotid Stenosis Veteran Affair Cooperative Study
Unable to display preview. Download preview PDF.