New methods for multiple testing in permutation inference for the general linear model

Tomáš Mrkvička, Mari Myllymäki, Mikko Kuronen, Naveen Naidu Narisetty

Research output: Contribution to journalArticlepeer-review

Abstract

Permutation methods are commonly used to test the significance of regressors of interest in general linear models (GLMs) for functional (image) data sets, in particular for neuroimaging applications as they rely on mild assumptions. Permutation inference for GLMs typically consists of three parts: choosing a relevant test statistic, computing pointwise permutation tests, and applying a multiple testing correction. We propose new multiple testing methods as an alternative to the commonly used maximum value of test statistics across the image. The new methods improve power and robustness against inhomogeneity of the test statistic across its domain. The methods rely on sorting the permuted functional test statistics based on pointwise rank measures; still, they can be implemented even for large data. The performance of the methods is demonstrated through a designed simulation experiment and an example of brain imaging data. We developed the R package GET, which can be used for the computation of the proposed procedures.

Original languageEnglish (US)
Pages (from-to)276-297
Number of pages22
JournalStatistics in Medicine
Volume41
Issue number2
DOIs
StatePublished - Jan 30 2022

ASJC Scopus subject areas

  • Epidemiology
  • Statistics and Probability

Fingerprint

Dive into the research topics of 'New methods for multiple testing in permutation inference for the general linear model'. Together they form a unique fingerprint.

Cite this