Package: exactGMH Type: Package Title: Exact and Permutation-Based Mantel Tests for Differential Item Functioning in Dichotomous and Polytomous Items Version: 0.1.0 Authors@R: c( person("Tri Zahra", "Ningsih", email = "trizahra10019@gmail.com", role = c("aut", "cre")), person("Aman", role = "aut"), person("Ahmad", "Nasrulloh", role = "aut"), person("Hera", "Hastuti", email = "herahastuti@fis.unp.ac.id", role = "aut"), person("Suci Kurnia", "Putri", role = "aut")) Description: Screens dichotomous and polytomous test items for Differential Item Functioning (DIF) using an extension of the Mantel (1963) and generalized Mantel-Haenszel statistic, with statistical significance computed via permutation rather than the conventional asymptotic chi-square approximation. Following Hemerik and Goeman (2018) , the permutation p-value is exact at the nominal level rather than an approximation, even for a finite number of permutations. This makes the test valid for small samples (fewer than 200 examinees per group), a condition common in classroom-, program-, and institution-level assessment where existing exact-inference options in other software are restricted to dichotomous items only. An optional Benjamini-Hochberg or Bonferroni correction addresses multiple comparisons when screening many items at once. License: MIT + file LICENSE Encoding: UTF-8 RoxygenNote: 7.3.1 Depends: R (>= 4.0) Imports: stats Suggests: testthat (>= 3.0.0), shiny Config/testthat/edition: 3 URL: https://github.com/exactGMH-project/exactGMH BugReports: https://github.com/exactGMH-project/exactGMH/issues NeedsCompilation: no Packaged: 2026-10-09 10:13:13 UTC; root Author: Tri Zahra Ningsih [aut, cre], Aman [aut], Ahmad Nasrulloh [aut], Hera Hastuti [aut], Suci Kurnia Putri [aut] Maintainer: Tri Zahra Ningsih Repository: https://trizahra10019-spec.r-universe.dev Date/Publication: 2026-08-09 08:10:06 UTC RemoteUrl: https://github.com/cran/exactGMH RemoteRef: HEAD RemoteSha: 052380a83b7a4a46bc100a911335debc472c682b