Combining p -values via averaging
通过平均值合并 p 值AI 解读 ↓
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通过平均值合并 p 值AI 解读 ↓
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Summary This paper proposes general methods for the problem of multiple testing of a single hypothesis, with a standard goal of combining a number of $p$-values without making any assumptions about their dependence structure. A result by Rüschendorf (1982) and, independently, Meng (1993) implies that the $p$-values can be combined by scaling up their arithmetic mean by a factor of 2, and no smaller factor is sufficient in general. A similar result by Mattner about the geometric mean replaces 2 by e. Based on more recent developments in mathematical finance, specifically, robust risk aggregation techniques, we extend these results to generalized means; in particular, we show that $K$ $p$-values can be combined by scaling up their harmonic mean by a factor of $\log K$ asymptotically as $K$ tends to infinity. This leads to a generalized version of the Bonferroni–Holm procedure. We also explore methods using weighted averages of $p$-values. Finally, we discuss the efficiency of various methods of combining $p$-values and how to choose a suitable method in light of data and prior information.