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Avoiding bias due to perfect prediction in multiple imputation of incomplete categorical variables()

Multiple imputation is a popular way to handle missing data. Automated procedures are widely available in standard software. However, such automated procedures may hide many assumptions and possible difficulties from the view of the data analyst. Imputation procedures such as monotone imputation and...

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Detalles Bibliográficos
Autores principales: White, Ian R., Daniel, Rhian, Royston, Patrick
Formato: Online Artículo Texto
Lenguaje:English
Publicado: North-Holland Pub. Co 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3990447/
https://www.ncbi.nlm.nih.gov/pubmed/24748700
http://dx.doi.org/10.1016/j.csda.2010.04.005
Descripción
Sumario:Multiple imputation is a popular way to handle missing data. Automated procedures are widely available in standard software. However, such automated procedures may hide many assumptions and possible difficulties from the view of the data analyst. Imputation procedures such as monotone imputation and imputation by chained equations often involve the fitting of a regression model for a categorical outcome. If perfect prediction occurs in such a model, then automated procedures may give severely biased results. This is a problem in some standard software, but it may be avoided by bootstrap methods, penalised regression methods, or a new augmentation procedure.