2025
Correcting for bias due to mismeasured exposure in mediation analysis with a survival outcome
Cheng C, Spiegelman D, Li F. Correcting for bias due to mismeasured exposure in mediation analysis with a survival outcome. Journal Of The Royal Statistical Society Series C (Applied Statistics) 2025, qlaf010. DOI: 10.1093/jrsssc/qlaf010.Peer-Reviewed Original ResearchExposure-mediator interactionProtective effect of physical activityHealth Professionals Follow-up StudyEffects of physical activityReduced body mass indexExposure measurement errorRisk of cardiovascular diseaseBody mass indexPhysical activityMismeasured exposureMass indexRare outcomesFollow-up studyCardiovascular diseaseMediation analysisCox regressionOutcomesBias formulaSurvival outcomesHealth
2023
Mediation analysis in the presence of continuous exposure measurement error
Cheng C, Spiegelman D, Li F. Mediation analysis in the presence of continuous exposure measurement error. Statistics In Medicine 2023, 42: 1669-1686. PMID: 36869626, PMCID: PMC11320713, DOI: 10.1002/sim.9693.Peer-Reviewed Original ResearchConceptsBody mass indexExposure measurement errorPhysical activityMediation proportionHealth Professionals FollowCardiovascular disease incidenceProfessionals FollowMediation analysisMass indexCardiovascular diseaseLower riskStudy designEffect estimatesValidation study designContinuous exposureBiased effect estimatesTrue exposureMediatorsExposureValidation studyBinary outcomesHealth science studiesOutcomesRiskDisease incidence
2021
A Bayesian approach for estimating the partial potential impact fraction with exposure measurement error under a main study/internal validation design
Chen X, Chang J, Spiegelman D, Li F. A Bayesian approach for estimating the partial potential impact fraction with exposure measurement error under a main study/internal validation design. Statistical Methods In Medical Research 2021, 31: 404-418. PMID: 34841964, DOI: 10.1177/09622802211060514.Peer-Reviewed Original ResearchConceptsPotential impact fractionImpact fractionExposure measurement errorHealth professionalsStudy designColorectal cancer incidenceValidation study designBurden of diseaseRisk factorsCancer incidenceHealth StudyDisease casesPublic health studiesRed meatContinuous exposureExposureProfessionalsIncidenceReclassification approachValidation designDiseaseIntake
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