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Abstract Details
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Activity Number:
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237
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Type:
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Contributed
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Date/Time:
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Monday, August 1, 2011 : 2:00 PM to 3:50 PM
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Sponsor:
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Section on Nonparametric Statistics
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| Abstract - #301026 |
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Title:
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A New Nonparametric Estimator of a Survival Function
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Author(s):
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Ganesh B. Malla*+ and Hari G. Mukerjee
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Companies:
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Xavier University and Wichita State University
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Address:
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8004 Higgins Ct, Cincinnati, OH, 45242, USA
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Keywords:
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Piecewise exponential estimator ;
Kaplan-Meier estimator ;
Survival function ;
Hazard rate
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Abstract:
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In 1983, Kitchin, Langberg and Proschan introduced a piecewise exponential estimator (PEXE) of a survival function (SF) for censored data. It provides a continuous estimator of the SF as well as a new method of handling the censoring. This PEXE has had limited usage possibly because the estimator is undefined beyond the last bservation even in the uncensored case. We propose a new PEXE that retains the spirit of the Kaplan-Meier estimator and provides an exponential tail with a hazard rate determined by a novel nonparametric consideration. A comparison, by simulation, of the model with other models has been considered.
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