A causal framework for surrogate endpoints with semi-competing risks data

Debashis Ghosh

Statistics & Probability Letters, 2012, vol. 82, issue 11, 1898-1902

Abstract: In this note, we address the problem of surrogacy using a causal modelling framework that differs substantially from the potential outcomes model that pervades the biostatistical literature. The framework comes from econometrics, and it conceptualizes direct effects of the surrogate endpoint on the true endpoint. While this framework can incorporate the so-called semi-competing risks data structure, we also derive a fundamental non-identifiability result. Relationships to existing causal modelling frameworks are also discussed.

Keywords: Clinical trial; Counterfactual; Dependence; Prentice criteria; Rubin causal model (search for similar items in EconPapers)
Date: 2012
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DOI: 10.1016/j.spl.2012.06.010

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