SURVIVAL ANALYSIS IN TELEMETRY STUDIES - THE STAGGERED ENTRY DESIGN
SURVIVAL ANALYSIS IN TELEMETRY STUDIES - THE STAGGERED ENTRY DESIGN
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DOI：
10.2307/3801296
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发表时间：
1989-01-01
影响因子：
2.3
通讯作者：
CURTIS, PD
中科院分区：
文献类型：
--
作者：
POLLOCK, KH;WINTERSTEIN, SR;CURTIS, PD
放射性标记动物存活分布的估计对于野生动物生态学家来说是重要的。必须考虑因无线电故障、无线电丢失或动物从研究区域迁移而丢失（或删失）的动物。Kaplan-Meier程序（Kaplan和Meier 1958），广泛用于受删失的医学研究，可以应用于这个问题。我们开发了Kaplan-Meier程序的简单修改，允许在研究开始后添加新动物。我们提出了2个例子，使用遥测数据收集的北方北美鹌鹑（Colinus virginianus）的简单性和实用性的卡普兰-迈耶程序及其修改。用于比较2种生存分布的对数秩检验也可以修改，以允许在研究期间进行添加。可以在个人计算机上运行的简单计算机程序可供作者使用。
The estimation of survival distributions for radio-tagged animals is important to wildlife ecologists. Allowance must be made for animals being lost (or censored) due to radio failure, radio loss, or emigration of the animal from the study area. The Kaplan-Meier procedure (Kaplan and Meier 1958), widely used in medical studies subject to censoring, can be applied to this problem. We developed a simple modification of the Kaplan-Meier procedure that allows for new animals to be added after the study has begun. We present 2 examples using telemetry data collected from northern bobwhite quail (Colinus virginianus) to show the simplicity and utility of the Kaplan-Meier procedure and its modifications. The log rank test used to compare 2 survival distributions can also be modified to allow for additions during the study. Simple computer programs that can be run on a personal computer are available for the authors.