JSM 2005 - Toronto

Abstract #303843

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Activity Number: 515
Type: Contributed
Date/Time: Thursday, August 11, 2005 : 10:30 AM to 12:20 PM
Sponsor: Biometrics Section
Abstract - #303843
Title: Bayesian Approach to Bivariate Change Point
Author(s): Pulak Ghosh*+ and Florin Vaida
Companies: Georgia State University and University of California, San Diego
Address: Department of Mathematics and statistics, Atlanta, GA, 30303, United States
Keywords: Bayesian ; change point ; Cd4 ; Cd8 ; ACTG 398
Abstract:

Longitudinal studies on CD4 and CD8 markers in an HIV-AIDS study make repeated observations of multiple measurements on each subject. Identifying change points in CD4 count prior to AIDS has been an active area of research. We demonstrate the use of Bayesian methods to simultaneously estimate different change points in the longitudinal course of these two markers. We show the usefulness of our method using a new HIV-AIDS study, ACTG 398 data.

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