A STRATIFIED PRODUCT LIMIT ESTIMATOR FOR THE FOLLOW-UP-STUDY IN CARDIOTHORACIC SURGERY

被引：1

作者：

CHEN, CL ^{[1
]}

LAUB, GW ^{[1
]}

MCGRATH, LB ^{[1
]}

机构：

[1] DEBORAH HEART & LUNG CTR,DEPT SURG,BROWNS MILLS,NJ 08015

来源：

BIOMETRICAL JOURNAL | 1993年 / 35卷 / 06期

关键词：

CENSORED DATA; ASYMPTOTIC RESULTS;

D O I：

10.1002/bimj.4710350613

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We propose a stratified product limit estimator and compare the asymptotic results with those of the unstratified version. When the censoring mechanisms are unequal for different strata, the unstratified version may overestimate the total survival rate of a heterogeneous population. A numerical example in cardiac surgery is examined to demonstrate that this situation does occur in real applications. This overestimation also can be elucidated heuristically by some redistribution schemes for the censored data.

引用

页码：759 / 767

页数：9

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