Targeted maximum likelihood based estimation for longitudinal mediation analysis

Causal mediation analysis with random interventions has become an area of significant interest for understanding time-varying effects with longitudinal and survival outcomes. To tackle causal and statistical challenges due to the complex longitudinal data structure with time-varying confounders, com...

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Main Authors: Wang Zeyi, Laan Lars van der, Petersen Maya, Gerds Thomas, Kvist Kajsa, Laan Mark van der
Format: Article
Language:English
Published: De Gruyter 2025-01-01
Series:Journal of Causal Inference
Subjects:
Online Access:https://doi.org/10.1515/jci-2023-0013
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author Wang Zeyi
Laan Lars van der
Petersen Maya
Gerds Thomas
Kvist Kajsa
Laan Mark van der
author_facet Wang Zeyi
Laan Lars van der
Petersen Maya
Gerds Thomas
Kvist Kajsa
Laan Mark van der
author_sort Wang Zeyi
collection DOAJ
description Causal mediation analysis with random interventions has become an area of significant interest for understanding time-varying effects with longitudinal and survival outcomes. To tackle causal and statistical challenges due to the complex longitudinal data structure with time-varying confounders, competing risks, and informative censoring, there exists a general desire to combine machine learning techniques and semiparametric theory. In this article, we focus on targeted maximum likelihood estimation (TMLE) of longitudinal natural direct and indirect effects defined with random interventions. The proposed estimators are multiply robust, locally efficient, and directly estimate and update the conditional densities that factorize data likelihoods. We utilize the highly adaptive lasso (HAL) and projection representations to derive new estimators (HAL-EIC) of the efficient influence curves (EICs) of longitudinal mediation problems and propose a fast one-step TMLE algorithm using HAL-EIC while preserving the asymptotic properties. The proposed method can be generalized for other longitudinal causal parameters that are smooth functions of data likelihoods, and thereby provides a novel and flexible statistical toolbox.
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institution Kabale University
issn 2193-3685
language English
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publisher De Gruyter
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series Journal of Causal Inference
spelling doaj-art-6e622d5970f240fbb2519c0dae707ab52025-02-02T15:45:47ZengDe GruyterJournal of Causal Inference2193-36852025-01-0113148284010.1515/jci-2023-0013Targeted maximum likelihood based estimation for longitudinal mediation analysisWang Zeyi0Laan Lars van der1Petersen Maya2Gerds Thomas3Kvist Kajsa4Laan Mark van der5Division of Biostatistics, School of Public Health, University of California, Berkeley, Berkeley, United States of AmericaDivision of Environmental Health Sciences, School of Public Health, University of California, Berkeley, Berkeley, United States of AmericaDivision of Biostatistics, School of Public Health, University of California, Berkeley, Berkeley, United States of AmericaDepartment of Public Health, Section of Biostatistics, University of Copenhagen, Copenhagen, DenmarkNovo Nordisk, Søborg, DenmarkDivision of Biostatistics, School of Public Health, University of California, Berkeley, Berkeley, United States of AmericaCausal mediation analysis with random interventions has become an area of significant interest for understanding time-varying effects with longitudinal and survival outcomes. To tackle causal and statistical challenges due to the complex longitudinal data structure with time-varying confounders, competing risks, and informative censoring, there exists a general desire to combine machine learning techniques and semiparametric theory. In this article, we focus on targeted maximum likelihood estimation (TMLE) of longitudinal natural direct and indirect effects defined with random interventions. The proposed estimators are multiply robust, locally efficient, and directly estimate and update the conditional densities that factorize data likelihoods. We utilize the highly adaptive lasso (HAL) and projection representations to derive new estimators (HAL-EIC) of the efficient influence curves (EICs) of longitudinal mediation problems and propose a fast one-step TMLE algorithm using HAL-EIC while preserving the asymptotic properties. The proposed method can be generalized for other longitudinal causal parameters that are smooth functions of data likelihoods, and thereby provides a novel and flexible statistical toolbox.https://doi.org/10.1515/jci-2023-0013longitudinal mediation analysisstochastic interventionrandom interventiontargeted maximum likelihood estimationefficient influence curveefficient estimatorhighly adaptive lasso62g0562g20
spellingShingle Wang Zeyi
Laan Lars van der
Petersen Maya
Gerds Thomas
Kvist Kajsa
Laan Mark van der
Targeted maximum likelihood based estimation for longitudinal mediation analysis
Journal of Causal Inference
longitudinal mediation analysis
stochastic intervention
random intervention
targeted maximum likelihood estimation
efficient influence curve
efficient estimator
highly adaptive lasso
62g05
62g20
title Targeted maximum likelihood based estimation for longitudinal mediation analysis
title_full Targeted maximum likelihood based estimation for longitudinal mediation analysis
title_fullStr Targeted maximum likelihood based estimation for longitudinal mediation analysis
title_full_unstemmed Targeted maximum likelihood based estimation for longitudinal mediation analysis
title_short Targeted maximum likelihood based estimation for longitudinal mediation analysis
title_sort targeted maximum likelihood based estimation for longitudinal mediation analysis
topic longitudinal mediation analysis
stochastic intervention
random intervention
targeted maximum likelihood estimation
efficient influence curve
efficient estimator
highly adaptive lasso
62g05
62g20
url https://doi.org/10.1515/jci-2023-0013
work_keys_str_mv AT wangzeyi targetedmaximumlikelihoodbasedestimationforlongitudinalmediationanalysis
AT laanlarsvander targetedmaximumlikelihoodbasedestimationforlongitudinalmediationanalysis
AT petersenmaya targetedmaximumlikelihoodbasedestimationforlongitudinalmediationanalysis
AT gerdsthomas targetedmaximumlikelihoodbasedestimationforlongitudinalmediationanalysis
AT kvistkajsa targetedmaximumlikelihoodbasedestimationforlongitudinalmediationanalysis
AT laanmarkvander targetedmaximumlikelihoodbasedestimationforlongitudinalmediationanalysis