Cost-effective clinical decision making

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Abstract
Are pediatric preoperative chest x-ray examinations worth doing? Sane et al. (p. 669) conclude that they are "medically and economically justified and essential." To answer this question requires at least the following information. What is the cost of the examination (dollars, radiation exposure, cost of further testing and perhaps inappropriate therapy resulting therefrom, and possible prolongation of hospital stay)? What is the benefit? What percent of patients have unsuspected findings; of these, the percent with modified treatment; and of these, what percent benefited therefrom? What was the cost per unit of benefit received? Is there some other use of these scarce resources that would have yielded greater benefits?

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