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An application of mixture distributions in modelization of length of hospital stay

dc.creatorAtienza Martínez, María Nieveses
dc.creatorGarcía Heras, Joaquínes
dc.creatorMuñoz Pichardo, Juan Manueles
dc.creatorVilla Caro, Rafaeles
dc.date.accessioned2021-06-23T09:26:20Z
dc.date.available2021-06-23T09:26:20Z
dc.date.issued2008
dc.identifier.citationAtienza Martínez, M.N., García Heras, J., Muñoz Pichardo, J.M. y Villa Caro, R. (2008). An application of mixture distributions in modelization of length of hospital stay. Statistics in Medicine, 27 (9), 1403-1420.
dc.identifier.issn0277-6715es
dc.identifier.urihttps://hdl.handle.net/11441/114724
dc.description.abstractLength of hospital stay (LOS) is an important indicator of the hospital activity and management of health care. The skewness exhibited by this variable poses problems in statistical modeling. The aim of this work is to model the variable LOS within diagnosis-related groups (DRG) through finite mixtures of distributions. A mixture of the union of Gamma, Weibull and Lognormal families is used in the model, instead of a mixture of a unique distribution family. Some theoretical questions regarding the model, such as the identifiability and study of asymptotic properties of ML estimators, are analyzed. The EM algorithm is proposed for performing these estimators. Finally, this new proposed model is illustrated by using data from different DRGs.es
dc.description.sponsorshipMinisterio de Educación y Ciencia MTM2004-01433es
dc.description.sponsorshipDirección General de Enseñanza Superior BFM2006-1409es
dc.formatapplication/pdfes
dc.format.extent18es
dc.language.isoenges
dc.publisherWileyes
dc.relation.ispartofStatistics in Medicine, 27 (9), 1403-1420.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectLength of stayes
dc.subjectDiagnosis-related groupses
dc.subjectFinite mixture modeles
dc.subjectGamma distributionses
dc.subjectWeibull distributionses
dc.subjectLognormal distributiones
dc.titleAn application of mixture distributions in modelization of length of hospital stayes
dc.typeinfo:eu-repo/semantics/articlees
dcterms.identifierhttps://ror.org/03yxnpp24
dc.type.versioninfo:eu-repo/semantics/submittedVersiones
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Matemática Aplicada I (ETSII)es
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Estadística e Investigación Operativaes
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Análisis Matemáticoes
dc.relation.projectIDMTM2004-01433es
dc.relation.projectIDBFM2006-1409es
dc.relation.publisherversionhttps://onlinelibrary.wiley.com/doi/abs/10.1002/sim.3029es
dc.identifier.doi10.1002/sim.3029es
dc.journaltitleStatistics in Medicinees
dc.publication.volumen27es
dc.publication.issue9es
dc.publication.initialPage1403es
dc.publication.endPage1420es
dc.identifier.sisius6654304es
dc.contributor.funderMinisterio de Educación y Ciencia (MEC). Españaes
dc.contributor.funderDirección General de Enseñanza Superior (DGES). Españaes

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