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http://dx.doi.org/10.5351/CKSS.2005.12.3.759

Genetic Mixed Effects Models for Twin Survival Data  

Ha, Il-Do (Department of Asset Management, Daegu Haany University)
Noh, Maengseok (Department of Statistics, Seoul National University)
Yoon, Sangchul (Department of Compuer and Information Science, Daegu Haany University)
Publication Information
Communications for Statistical Applications and Methods / v.12, no.3, 2005 , pp. 759-771 More about this Journal
Abstract
Twin studies are one of the most widely used methods for quantifying the influence of genetic and environmental factors on some traits such as a life span or a disease. In this paper we propose a genetic mixed linear model for twin survival time data, which allows us to separate the genetic component from the environmental component. Inferences are based upon the hierarchical likelihood (h-likelihood), which provides a statistically efficient and simple unified framework for various random-effect models. We also propose a simple and fast computation method for analyzing a large data set on twin survival study. The new method is illustrated to the survival data in Swedish Twin Registry. A simulation study is carried out to evaluate the performance.
Keywords
Environment effect; Genetic effect; Hierarchical likelihood; Random effects;
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