On the use of the upper confidence limit for the variance from a pilot sample for sample size determination
On the use of the upper confidence limit for the variance from a pilot sample for sample size determination
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DOI：
10.1002/bimj.4710380806
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发表时间：
1996-01-01
影响因子：
1.7
通讯作者：
Wassmer, G
中科院分区：
文献类型：
--
作者：
Kieser, M;Wassmer, G
在最近的一篇论文中，Browne（1995）研究了使用试验样本计算样本量的问题。蒙特卡罗模拟表明，使用100。总体方差sigma（2）的（1 - gamma）%单侧置信上限导致样本量保证计划功效的概率至少为1 - gamma。本文的目的是进一步深入了解布朗的结果分析考虑。此外，预期的权力进行调查时，应用的战略和建议的试点样本量的选择。
In a recent paper, BROWNE (1995) investigated the use of a pilot sample for sample size calculation. Monte Carlo simulations indicated that using a 100 . (1 - gamma) per cent upper one-sided confidence limit on the population variance sigma(2) leads to a sample size that guarantees the planned power with a probability of at least 1 - gamma. The purpose of this paper is to get further insight into the results of BROWNE by analytical considerations. Furthermore, the expected power is investigated when applying the strategy and recommendations for the choice of the pilot sample size are given.