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A maximum entropy approach for the evaluation of surrogate endpoints based on causal inference.
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- Author(s): Alonso A;Alonso A; Van der Elst W; Van der Elst W; Molenberghs G; Molenberghs G; Molenberghs G
- Source:
Statistics in medicine [Stat Med] 2018 Dec 20; Vol. 37 (29), pp. 4525-4538. Date of Electronic Publication: 2018 Aug 23.- Publication Type:
Journal Article- Language:
English - Source:
- Additional Information
- Source: Publisher: Wiley Country of Publication: England NLM ID: 8215016 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1097-0258 (Electronic) Linking ISSN: 02776715 NLM ISO Abbreviation: Stat Med Subsets: MEDLINE
- Publication Information: Original Publication: Chichester ; New York : Wiley, c1982-
- Subject Terms: Biomarkers* ; Causality* ; Entropy*; Endpoint Determination/*methods; Antipsychotic Agents/therapeutic use ; Bayes Theorem ; Endpoint Determination/statistics & numerical data ; Haloperidol/therapeutic use ; Humans ; Probability ; Risperidone/therapeutic use ; Schizophrenia/drug therapy ; Treatment Outcome
- Abstract: The maximum entropy principle offers a constructive criterion for setting up probability distributions on the basis of partial knowledge. In the present work, the principle is applied to tackle an important problem in the surrogate marker field, namely, the evaluation of a binary outcome as a putative surrogate for a binary true endpoint within a causal inference framework. In the first step, the maximum entropy principle is used to determine the relative frequencies associated with the values of the vector of potential outcomes. Subsequently, in the second step, these relative frequencies are used in combination with two newly proposed metrics of surrogacy, the so-called individual causal association and the surrogate predictive function, to assess the validity of the surrogate. The procedure is conceptually similar to the use of noninformative or reference priors in Bayesian statistics. Additionally, approximate, identifiable bounds are proposed for the estimands of interest, and their performance is studied via simulations. The methods are illustrated using data from a clinical trial involving schizophrenic patients, and a newly developed and user-friendly R package Surrogate is provided to carry out the validation exercise.
(© 2018 John Wiley & Sons, Ltd.) - Contributed Indexing: Keywords: causal inference; information theory; maximum entropy; surrogate endpoints
- Accession Number: 0 (Antipsychotic Agents)
0 (Biomarkers)
J6292F8L3D (Haloperidol)
L6UH7ZF8HC (Risperidone) - Publication Date: Date Created: 20180825 Date Completed: 20191108 Latest Revision: 20191108
- Publication Date: 20231215
- Accession Number: 10.1002/sim.7939
- Accession Number: 30141219
- Source:
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