1. Debate: Are surrogate end-point studies worth the effort?
- Author
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Elkeles Robert S and Valabhji Jonathan
- Subjects
cardiovascular events ,coronary angiography ,electron beam computed tomography ,intima-media thickness ,surrogate end-points ,Medicine (General) ,R5-920 - Abstract
Abstract Surrogate end-points of cardiovascular disease can provide useful information in cross-sectional, prospective and interventional studies. They provide information on association with risk factors, natural history and factors associated with disease progression. Because every participant can reach an end-point, sufficient power can be attained with much smaller numbers of subjects in surrogate end-point studies than in studies that use clinical endpoints, so that the costs are likely to be substantially less. Measures of carotid intima-media thickness (IMT) by B-mode ultrasonography and of coronary calcification by electron beam computed tomography (EBCT) appear to be the most promising surrogate end-points.
- Published
- 2000
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