Package: lordif Version: 0.4.2 Date: 2025-1-8 Title: Logistic Ordinal Regression Differential Item Functioning using IRT Authors@R: c(person(given = c("Seung", "W."), family = "Choi", role = c("aut", "cre"), email = "schoi@austin.utexas.edu"), person(given = c("Laura", "E."), family = "Gibbons", role = "aut"), person(given = c("Paul", "K."), family = "Crane", role = "aut")) Maintainer: Seung W. Choi Depends: R (>= 3.6.0), mirt, rms, doSNOW, foreach Description: Performs analysis of Differential Item Functioning (DIF) for dichotomous and polytomous items using an iterative hybrid of ordinal logistic regression and item response theory (IRT) according to Choi, Gibbons, and Crane (2011) . Imports: stats4 License: GPL (>= 2) LazyLoad: yes NeedsCompilation: no Config/pak/sysreqs: cmake make libicu-dev libuv1-dev libx11-dev Repository: https://choi-phd.r-universe.dev Date/Publication: 2026-03-23 21:26:06 UTC RemoteUrl: https://github.com/choi-phd/lordif RemoteRef: HEAD RemoteSha: 758348bf82abdf46055ceaee79f827dd73ad42a2 Packaged: 2026-06-21 08:42:32 UTC; root Author: Seung W. Choi [aut, cre], Laura E. Gibbons [aut], Paul K. Crane [aut]