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Abstract Details
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Activity Number:
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32
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Type:
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Contributed
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Date/Time:
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Sunday, July 29, 2012 : 2:00 PM to 3:50 PM
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Sponsor:
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Biometrics Section
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| Abstract - #306421 |
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Title:
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Bayesian Approach in Detecting Change Points of a Hazard Rate
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Author(s):
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Peter Guarino and Bingqing Zhou and Jane Zhang*+
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Companies:
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VA Cooperative Studies Program and Yale University/VA CSPCC West Haven and VA Cooperative Studies Program
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Address:
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950 Campbell Ave, West Haven, CT, 06516,
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Keywords:
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Bayesian ;
Change point ;
Hazard ;
Survival
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Abstract:
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We propose a Bayesian method to test for change points in a piecewise linear hazard model. For deciding between k and k+1 change points, the bayes factor for the actual data allowing on k+1 change points is compared to the distribution of bayes factors obtained from sampling from the estimated k change point model. Simple distributional assumptions are used for parameters other than change point parameters. We illustrate the methodology using data from an acute kidney injury trial conducted by the VA.
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Authors who are presenting talks have a * after their name.
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