Counter-intuitive properties of the Kaplan-Meier estimator

被引:1
|
作者
Nishikawa, M [1 ]
Tango, T [1 ]
机构
[1] Aventis Pharma Ltd, Biostat & Data Management Dept, Minato Ku, Tokyo 1078465, Japan
关键词
censored data; two-sample comparison; time to event data;
D O I
10.1016/j.spl.2003.07.021
中图分类号
O21 [概率论与数理统计]; C8 [统计学];
学科分类号
020208 ; 070103 ; 0714 ;
摘要
We show that under certain conditions the Kaplan-Meier (KM) estimator from a sample with shorter survival times can be greater than that from a sample with longer survival times. Such a counter-intuitive property of the KM estimator should be taken into account in its application, but the condition causing such phenomena has not yet been studied. In this paper, we give sufficient conditions for such peculiar behavior of the KM estimator. (C) 2003 Elsevier B.V. All rights reserved.
引用
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页码:353 / 361
页数:9
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