Model-Based Recursive Partitioning of Extended Redundancy Analysis with an Application to Nicotine Dependence among US adults

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dc.contributor.authorKim, Sunmee
dc.contributor.authorHwang, Heungsun
dc.date.accessioned2021-03-05T18:02:14Z
dc.date.available2021-03-05T18:02:14Z
dc.date.issued2021
dc.date.submitted2021-03-05T17:57:42Zen_US
dc.description.abstractExtended redundancy analysis (ERA) is used to reduce multiple sets of predictors to a smaller number of components and examine the effects of these components on a response variable. In various social and behavioral studies, auxiliary covariates (e.g., gender, ethnicity, etc.) can often lead to heterogeneous subgroups of observations, each of which involves distinctive relationships between predictor and response variables. ERA is currently unable to consider such covariate-dependent heterogeneity to examine whether the model parameters vary across subgroups differentiated by covariates. To address this issue, we combine ERA with model-based recursive partitioning in a single framework. This combined method, MOB-ERA, aims to partition observations into heterogeneous subgroups recursively based on a set of covariates while fitting a specified ERA model to data. Upon the completion of the partitioning procedure, one can easily examine the difference in the estimated ERA parameters across covariate-dependent subgroups. Moreover, it produces a tree diagram that aids in visualizing a hierarchy of partitioning covariates, as well as interpreting their interactions. In the analysis of public data concerning nicotine dependence among US adults, the method uncovered heterogeneous subgroups characterized by several sociodemographic covariates, each of which yielded different directional relationships between three predictor sets and nicotine dependence.en_US
dc.identifier.doi10.1111/bmsp.1224
dc.identifier.urihttp://hdl.handle.net/1993/35347
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjectExtended redundancy analysisen_US
dc.subjectmodel-based recursive partitioningen_US
dc.subjectcovariate-dependent heterogeneityen_US
dc.subjectdecision treeen_US
dc.subjectmodel visualizationen_US
dc.titleModel-Based Recursive Partitioning of Extended Redundancy Analysis with an Application to Nicotine Dependence among US adultsen_US
dc.typePreprinten_US
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