Download A Computational Model of Reasoning from the Clinical by Glenn D. Rennels M.D., Ph.D. (auth.) PDF

By Glenn D. Rennels M.D., Ph.D. (auth.)

As examine on specialist platforms has moved good into its moment decade, it has develop into well known to quote the constraints of the phenomenologic or associational method of wisdom illustration that used to be average of first iteration structures. for instance, the Internist-1 wisdom base represents explicitly over six hundred illnesses, encoding linked ailment manifestations (signs, indicators, actual findings, and lab abnormalities) yet failing to house the explanations that these findings will be found in the illness [Miller, R. A. 82]. in recent times Pople has sought so as to add particular causal types to the data base in a revised model of this system often called CADUCEUS [Pople 82]. equally, a regular construction rule within the MYCIN approach states inferences that could be drawn while particular stipulations are came across to be precise [Buchanan 84], however the underlying causes for such relationships usually are not encoded. Clancey has argued that MYCIN wishes such "supporting wisdom" represented, particularly if its wisdom base is for use for educating reasons [Clancey 83]. via the overdue Nineteen Seventies, man made intelligence researchers have been starting to test with reasoning structures that used distinctive mechanistic or causal niodels of the item being analyzed. the most effective early examples have been a application to educate scholars the right way to examine digital circuits [Brown eighty two] and a method for diagnosing issues of mechanical units [Rieger 76].

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Veronesi81 was a randomized, controlled trial carried out at the Cancer Institute in Milan. Patients were randomized to quadrantectomy combined with adjuvant radiotherapy combined with CMF for histology+ patients (N=352) or another protocol which was radical mastectomy combined with CMF for histology+ patients (N=349). 84. 83. "Are these results relevant to your patient? We suspect it makes little difference that the intervention was somewhat nonstandard (quadrantectomy removes more skin, fascia and muscle than wide excision).

In a paper entitled "A method for assessing the quality of a randomized control trial", Chalmers focusses on statistical methodology [Chalmers 81]. He itemizes a checklist of items which might be used to assess the methodological quality of a randomized controlled trial. The author provides an explicit algorithm which others might use: the criteria for a successful "score" on each item are listed. There is no claim for a theoretical basis to the scoring: it is empirical, based on the expert opinion of biostatisticians.

Ibid] As can be seen from these excerpts, the advice is general. Indeed, without knowing the precise medical question being asked and the details of the study being examined, the most one can do is to offer general guidelines to the practicing physician. 32 Background Another useful book on this topic is Coping with the Biomedical Literature [Warren 81]. Chapter 9 is entitled "Evaluation: Requirements for Clinical Application". " These are helpful, but very general guidelines. " In a paper entitled "A method for assessing the quality of a randomized control trial", Chalmers focusses on statistical methodology [Chalmers 81].

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