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A semiparametric Bayesian joint model for multiple mixed-type outcomes: an application to acute myocardial infarction

Alessandra Guglielmi (), Francesca Ieva (), Anna Maria Paganoni () and Fernardo A. Quintana ()
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Alessandra Guglielmi: Politecnico di Milano
Francesca Ieva: Università degli Studi di Milano
Anna Maria Paganoni: Politecnico di Milano
Fernardo A. Quintana: Pontificia Universidad Católica de Chile

Advances in Data Analysis and Classification, 2018, vol. 12, issue 2, No 10, 399-423

Abstract: Abstract We propose a Bayesian semiparametric regression model to represent mixed-type multiple outcomes concerning patients affected by Acute Myocardial Infarction. Our approach is motivated by data coming from the ST-Elevation Myocardial Infarction (STEMI) Archive, a multi-center observational prospective clinical study planned as part of the Strategic Program of Lombardy, Italy. We specifically consider a joint model for a variable measuring treatment time and in-hospital and 60-day survival indicators. One of our main motivations is to understand how the various hospitals differ in terms of the variety of information collected as part of the study. To do so we postulate a semiparametric random effects model that incorporates dependence on a location indicator that is used to explicitly differentiate among hospitals in or outside the city of Milano. The model is based on the two parameter Poisson-Dirichlet prior, also known as the Pitman-Yor process prior. We discuss the resulting posterior inference, including sensitivity analysis, and a comparison with the particular sub-model arising when a Dirichlet process prior is assumed.

Keywords: Bayesian clustering; Bayesian nonparametrics; Two parameter Poisson-Dirichlet process prior; Random-effects models; Random partition models; Unbalanced binary outcomes; 62F15; 62P10; 62J12 (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (1)

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DOI: 10.1007/s11634-016-0273-7

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