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http://hdl.handle.net/1942/2051
Title: | Joint modelling of repeated measurements and event time: Application to performance traits and survival of lambs bred in sub-humid tropics | Authors: | NGUTI, Rosemary BURZYKOWSKI, Tomasz Rowlands, J RENARD, Didier JANSSEN, Paul |
Issue Date: | 2005 | Publisher: | E D P SCIENCES | Source: | GENETICS SELECTION EVOLUTION, 37(2). p. 175-197 | Abstract: | We considered the analysis of a study for Dorper, Red Maasai and crossbred lambs born over a period of 6 years at the Diani Estate, Kenya. The study was designed to compare survival and performance traits of genotypes with differing susceptibilities to helminthiasis. The available data include information on time to death and repeated measurements of body weight, packed cell volume (PCV) and faecal egg count (FEC) of the animals. In the paper, we consider joint modelling of the survival time and the repeated measurements. Such an approach allows to account for the possible association between the survival and repeated measurement processes. The advantages and limitations of the joint modelling are discussed and illustrated using the Diani Estate study data. | Notes: | Univ Nairobi, Dept Math, Nairobi, Kenya. Limburgs Univ Ctr, Ctr Stat, Diepenbeek, Belgium. Int Livestock Res Inst, Nairobi, Kenya.Nguti, R, Univ Nairobi, Dept Math, Nairobi, Kenya.r.wangeci@cgiar.org | Keywords: | repeated measurements; time-to-event; joint modelling; sheep; helminthiasis | Document URI: | http://hdl.handle.net/1942/2051 | ISSN: | 0999-193X | e-ISSN: | 1297-9686 | DOI: | 10.1051/gse:2004043 | ISI #: | 000227515200003 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2006 |
Appears in Collections: | Research publications |
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