A HYBRID METHODOLOGY FOR MODELING RISK OF ADVERSE EVENTS IN COMPLEX HEALTHCARE SETTINGS

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dc.contributor.advisorMOSLEH, ALIen_US
dc.contributor.advisorDIERKS, MEGHANen_US
dc.contributor.authorKazemi Tabriz, Rezaen_US
dc.contributor.departmentReliability Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2011-10-08T05:52:33Z
dc.date.available2011-10-08T05:52:33Z
dc.date.issued2011en_US
dc.description.abstractDespite efforts to provide safe, effective medical care, adverse events still occur with some regularity. While risk cannot be entirely eliminated from healthcare activities, an important goal is to develop effective and durable mitigation strategies to render the system `safer'. In order to do this, though, we must develop models that comprehensively and realistically characterize the risk. In the healthcare domain, this can be extremely challenging due to the wide variability in the way that healthcare processes and interventions are executed and also due to the dynamic nature of risk in this particular domain. In this study we have developed a generic methodology for evaluating dynamic changes in adverse event risk in acute care hospitals as a function of organizational and non-organizational factors, using a combination of modeling formalisms. First, a system dynamics (SD) framework is used to demonstrate how organizational level and policy level contributions to risk evolve over time, and how policies and decisions may affect the general system-level contribution to adverse event risk. It also captures the feedback of organizational factors and decisions over time and the non-linearities in these feedback effects. Second, Bayesian Belief Network (BBN) framework is used to represent patient-level factors and also physician level decisions and factors in the management of an individual patient, which contribute to the risk of hospital-acquired adverse event. The model is intended to support hospital decisions with regards to staffing, length of stay, and investment in safeties, which evolve dynamically over time. The methodology has been applied in modeling the two types of common adverse events; pressure ulcers and vascular catheter-associated infection, and has been validated with eight years of clinical data.en_US
dc.identifier.urihttp://hdl.handle.net/1903/11938
dc.subject.pqcontrolledEngineeringen_US
dc.subject.pqcontrolledSystem scienceen_US
dc.subject.pqcontrolledHealth care managementen_US
dc.subject.pquncontrolledADVERSE EVENTSen_US
dc.subject.pquncontrolledBAYESIAN BELIEF NETWORKSen_US
dc.subject.pquncontrolledHEALTHCARE RISKen_US
dc.subject.pquncontrolledLINE INFECTIONen_US
dc.subject.pquncontrolledPRESSURE ULCERen_US
dc.subject.pquncontrolledRISK ANALYSISen_US
dc.titleA HYBRID METHODOLOGY FOR MODELING RISK OF ADVERSE EVENTS IN COMPLEX HEALTHCARE SETTINGSen_US
dc.typeDissertationen_US

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