Evaluating the performance of a large computerized information system.
D000043:Abstracting and Indexing; D001634:Bibliographies as Topic; D003201:Computers; D007256:Information Systems; D008396:Maryland; D009317:National Library of Medicine (U.S.); D010506:Periodicals as Topic; D012494:Sampling Studies; D013223:Statistics as Topic; D013358:Subject Headings; D014481:United States