Exercise Stress Testing

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Abstract
To the Editor: The statistical analysis of the results of exercise electrocardiography and selective cine coronary arteriography by Rifkin and Hood1 resolves the controversy initiated by a recent publication from the National Heart, Blood, and Lung Institute group.2 , 3 The results from the latter report appear to agree closely with others when the prior probability of the presence of disease in the population under study is taken into account.Application of the Bayesian approach in clinical practice requires quantitative estimation of this prior probability from data available before the exercise test. This estimation could be based on the Coronary Risk Handbook . . .