Some practical guidelines for effective sample size determination
Some practical guidelines for effective sample size determination
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DOI：
10.1198/000313001317098149
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发表时间：
2001-08-01
影响因子：
1.8
通讯作者：
Lenth, RV
中科院分区：
文献类型：
--
作者：
Lenth, RV
样本量的确定通常是计划统计研究的重要步骤，但通常也是困难的一步。在要克服的重要障碍中，必须获得一个或多个误差方差的估计值，并指定重要的效应量。走捷径的诱惑是存在的。本文提供了一些成功的和有意义的样本量确定的建议。还讨论了样本量可能不是主要问题的可能性，真实的目标是设计一个高质量的研究。最后，批评了一些不明智的捷径有关的权力和样本量。
Sample size determination is often an important step in planning a statistical study-and it is usually a difficult one. Among the important hurdles to be surpassed, one must obtain an estimate of one or more error variances and specify an effect size of importance. There is the temptation to take some shortcuts. This article offers some suggestions for successful and meaningful sample size determination. Also discussed is the possibility that sample size may not be the main issue, that the real goal is to design a high-quality study. Finally, criticism is made of some ill-advised shortcuts relating to power and sample size.