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Empirical likelihood tests for stoch...

Chang, Hsin-wen.

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Empirical likelihood tests for stochastic ordering based on censored and biased data.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Empirical likelihood tests for stochastic ordering based on censored and biased data./
Author:	Chang, Hsin-wen.
Description:	105 p.
Notes:	Source: Dissertation Abstracts International, Volume: 76-02(E), Section: B.
Contained By:	Dissertation Abstracts International76-02B(E).
Subject:	Biology, Biostatistics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3639960
ISBN:	9781321250480

Empirical likelihood tests for stochastic ordering based on censored and biased data.
Chang, Hsin-wen.

Empirical likelihood tests for stochastic ordering based on censored and biased data. - 105 p.

Source: Dissertation Abstracts International, Volume: 76-02(E), Section: B.

Thesis (Ph.D.)--Columbia University, 2014.

In the classical two-sample comparison problem, it is often of interest to examine whether the distribution function is uniformly higher in one group than the other. This can be framed in terms of the notion of stochastic ordering. We consider testing for stochastic ordering based on two types of data: (1) right-censored and (2) size-biased data. We derive our procedures using the empirical likelihood method, and the proposed tests are based on maximally selected local empirical likelihood statistics. For (1), the proposed test is shown via a simulation study to have superior power to the commonly-used log-rank test under crossing-hazard alternatives. The approach is illustrated using data from a randomized clinical trial involving the treatment of severe alcoholic hepatitis. As for (2), simulations show that the proposed test outperforms the Wald test and the test overlooking size bias in all the cases considered. The approach is illustrated via a real data example of alcohol concentration in fatal driving accidents.

ISBN: 9781321250480Subjects--Topical Terms:

1018416
Biology, Biostatistics.

Empirical likelihood tests for stochastic ordering based on censored and biased data.
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100 1 $a Chang, Hsin-wen. $3 1953742
245 1 0 $a Empirical likelihood tests for stochastic ordering based on censored and biased data.
300 $a 105 p.
500 $a Source: Dissertation Abstracts International, Volume: 76-02(E), Section: B.
500 $a Adviser: Ian W. McKeague.
502 $a Thesis (Ph.D.)--Columbia University, 2014.
520 $a In the classical two-sample comparison problem, it is often of interest to examine whether the distribution function is uniformly higher in one group than the other. This can be framed in terms of the notion of stochastic ordering. We consider testing for stochastic ordering based on two types of data: (1) right-censored and (2) size-biased data. We derive our procedures using the empirical likelihood method, and the proposed tests are based on maximally selected local empirical likelihood statistics. For (1), the proposed test is shown via a simulation study to have superior power to the commonly-used log-rank test under crossing-hazard alternatives. The approach is illustrated using data from a randomized clinical trial involving the treatment of severe alcoholic hepatitis. As for (2), simulations show that the proposed test outperforms the Wald test and the test overlooking size bias in all the cases considered. The approach is illustrated via a real data example of alcohol concentration in fatal driving accidents.
590 $a School code: 0054.
650 4 $a Biology, Biostatistics. $3 1018416
690 $a 0308
710 2 $a Columbia University. $b Biostatistics. $3 2105522
773 0 $t Dissertation Abstracts International $g 76-02B(E).
790 $a 0054
791 $a Ph.D.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3639960