Document 0336 DOCN M9460336 TI AIDS2: a decision-support tool for decreasing physicians' uncertainty regarding patient eligibility for HIV treatment protocols. DT 9404 AU Ohno-Machado L; Parra E; Henry SB; Tu SW; Musen MA; Section on Medical Informatics, Stanford University School of; Medicine, CA. SO Proc Annu Symp Comput Appl Med Care. 1993;:429-33. Unique Identifier : AIDSLINE MED/94176858 AB We have developed a decision-support tool, the AIDS Intervention Decision-Support System (AIDS2), to assist in the task of matching patients to therapy-related research protocols. The purposes of AIDS2 are to determine the initial eligibility status of HIV-infected patients for therapy-related research protocols, and to suggest additional data-gathering activities that will decrease uncertainty related to the eligibility status. AIDS2 operates in either a patient-driven or protocol-driven mode. We represent the system knowledge in three combined levels: a classification level, where deterministic knowledge is represented; a belief-network level, where probabilistic knowledge is represented; and a control level, where knowledge about the system's operation is stored. To determine whether the design specifications were met, we presented a series of 10 clinical cases based on actual patients to the system. AIDS2 provided meaningful advice in all cases. DE Acquired Immunodeficiency Syndrome/*THERAPY Artificial Intelligence Bayes Theorem Clinical Protocols Clinical Trials *Decision Making, Computer-Assisted *Decision Support Techniques *Eligibility Determination Human Neural Networks (Computer) Probability Support, Non-U.S. Gov't Support, U.S. Gov't, P.H.S. JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).