Approximations to a conservative inverse chi-square procedure for combining p-values in integrative research

Hilary Saner

Statistics & Probability Letters, 1992, vol. 15, issue 3, 215-222

Abstract: The use of p-values in combining the results of independent studies often involves studies that are potentially aberrant. This suggests the use of a statistic which trims some of the smallest and largest p-values. Here we provide two convenient approximations to the exact distribution of the trimmed Fisher statistic. The first utilizes Pearson's system of curve classification, while the second is a normal approximation.

Keywords: Fisher; statistic; meta-analysis; robust; procedures; sums; of; exponentials (search for similar items in EconPapers)
Date: 1992
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