Gamma Frailty Regression Models in Mixture Distributions

Hanagal David D.
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Hanagal David D.: Department of Statistics, University of Pune, Pune-411007, India

Stochastics and Quality Control, 2007, vol. 22, issue 2, 295-302

Abstract: We propose frailty regression models in mixture distributions assuming the distribution of frailty to be a gamma distribution. We consider Weibull mixture as an example. There are some interesting situations like survival times in genetic epidemiology, dental implants of patients and twin births (both monozygotic and dizygotic) where genetic behavior (which is unknown and random) of patients follows a known frailty distribution. These are the situations, which motivate to study this particular model.

Keywords: Gamma Frailty; Gamma mixture frailty; Mixture distribution; Parametric regression; Survival times; Weibull model (search for similar items in EconPapers)
Date: 2007
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Citations: View citations in EconPapers (1)

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DOI: 10.1515/EQC.2007.295

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