2025
Assessing Mediation in Cross‐Sectional Stepped Wedge Cluster Randomized Trials
Cao Z, Li F. Assessing Mediation in Cross‐Sectional Stepped Wedge Cluster Randomized Trials. Statistics In Medicine 2025, 44: e70175. PMID: 40662697, DOI: 10.1002/sim.70175.Peer-Reviewed Original ResearchConceptsStepped wedge cluster randomized trialSW-CRTsTreatment effect heterogeneityCluster randomized trialSW-CRTBinary mediatorEffect heterogeneityGeneralized linear mixed modelsNatural indirect effectLinear mixed modelsEstimationEffective structureExamplesMixed modelsType combinationsMediation proportionPractical implementation
2024
How to achieve model-robust inference in stepped wedge trials with model-based methods?
Wang B, Wang X, Li F. How to achieve model-robust inference in stepped wedge trials with model-based methods? Biometrics 2024, 80: ujae123. PMID: 39499239, PMCID: PMC11536888, DOI: 10.1093/biomtc/ujae123.Peer-Reviewed Original ResearchConceptsTreatment effect estimandsWorking correlation structureSandwich variance estimatorExchangeable working correlation structureFunction of calendar timeEffect estimandsVariance estimationLink functionStepped wedge trialEstimandsTheoretical resultsCorrelation structureWedge trialsEstimating EquationsCluster randomized trialG-computationLinear mixed modelsInferencePotential outcomesMisspecificationEstimationEffective structureModel-based methodsGeneralized Estimating EquationsMixed models
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