Article,

Statistical evaluation of surrogate markers: validity, efficiency, and sensitivity.

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Clinical trials (London, England), 10 (5): 693-5 (October 2013)Mesures de resultats; Surrogate endpoints; Introductori.
DOI: 10.1177/1740774513499652

Abstract

Identification of surrogate markers for a marketed drug is important in monitoring the efficacy or safety after a patient uses the drug. In this article, we clarify the statistical definitions of the surrogate endpoint and surrogate marker and introduce the concept of the validity and efficiency of a surrogate marker. We also review some existing methods and suggest the proportion of information gain is appropriate to be used to evaluate the validity of a surrogate marker.

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