Practical guide to sample size calculations: superiority trials

被引:18
作者
Flight, Laura [1 ]
Julious, Steven A. [1 ]
机构
[1] Univ Sheffield, Med Stat Grp, Sheffield, S Yorkshire, England
关键词
sample size; superiority; power; clinical trials;
D O I
10.1002/pst.1718
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
A sample size justification is a vital part of any investigation. However, estimating the number of participants required to give meaningful results is not always straightforward. A number of components are required to facilitate a suitable sample size calculation. In this paper, the steps for conducting sample size calculations for superiority trials are summarised. Practical advice and examples are provided illustrating how to carry out the calculations by hand and using the app SampSize. Copyright (c) 2015 John Wiley & Sons, Ltd.
引用
收藏
页码:75 / 79
页数:5
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