Zhao Yan D, Rahardja Dewi, Mei Yajun
Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46285, USA.
J Biopharm Stat. 2008;18(6):1112-9. doi: 10.1080/10543400802369020.
In this article we study sample size calculation methods for the asymptotic van Elteren test. Because the existing methods are only applicable to continuous data without ties, in this article we develop a new method that can be used on ordinal data. The new method has a closed form formula and is very easy to calculate. The new sample size formula performs very well because our simulations show that the corresponding actual powers are close to the nominal powers.
在本文中，我们研究了渐近范·埃尔特伦检验的样本量计算方法。由于现有的方法仅适用于无 ties 的连续数据，因此在本文中我们开发了一种可用于有序数据的新方法。新方法有一个封闭形式的公式，非常易于计算。新的样本量公式表现良好，因为我们的模拟表明相应的实际功效接近名义功效。
