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配对设计中中位数的再随机化

Rerandomizing the Median in Matched-Pairs Designs

Biometrika · 1987
被引 2
ABS 4

中文导读

研究了在配对设计中用中位数替代均值进行再随机化检验,将复杂计算简化为手算可行,并通过含异常值的例子展示其稳健性,还给出了构建置信区间的方法。

Abstract

When a rerandomization or permutation test is applied to a matched-pairs design, the observed mean difference is typically compared with the null distribution of means that would have occurred under all possible randomizations. It is shown that rerandomizing the median instead of the mean transforms a formidable computational problem into one amenable to a hand calculator. Moreover, the robustness derived from rerandomizing the median rather than the mean is illustrated with an example where outliers were anticipated. Computational methods for constructing confidence intervals are also presented, and extensions to trimmed means are discussed.

配对设计再随机化检验中位数稳健性置信区间