2025
Three-Part Random Effect Models for Longitudinal Skewed Survey Data With “Not Applicable” Responses
Buta E, Simon P, Gueorguieva R. Three-Part Random Effect Models for Longitudinal Skewed Survey Data With “Not Applicable” Responses. Journal Of Educational And Behavioral Statistics 2025 DOI: 10.3102/10769986251318028.Peer-Reviewed Original Research
2020
Two‐part models for repeatedly measured ordinal data with “don't know” category
Gueorguieva R, Buta E, Morean M, Krishnan‐Sarin S. Two‐part models for repeatedly measured ordinal data with “don't know” category. Statistics In Medicine 2020, 39: 4574-4592. PMID: 32909252, PMCID: PMC8025667, DOI: 10.1002/sim.8739.Peer-Reviewed Original ResearchConceptsAdaptive Gaussian quadratureCorrelated random effectsSAS PROC NLMIXEDOrdinal dataMaximum likelihood estimationTerms of biasStatistical dependenceNominal modelGaussian quadraturePROC NLMIXEDLikelihood estimationPartial orderingEstimation algorithmTwo-part modelModel formulationSimulation studyRandom effectsPredictor effectsSubmodelsOrdinal natureFormulationNLMIXEDQuadratureModelOrdering
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