Multilevel Mantel-Haenszel Statistics for Differential Item Functioning Detection R package DIFplus version 1.1 CRAN Task View: Psychometrics (https://CRAN.R-project.org/view=Psychometrics) Clustered or multilevel data structures are common in the assessment of differential item functioning (DIF), particularly in the context of large-scale assessment programs. This package allows users to implement extensions of the Mantel-Haenszel DIF detection procedures in the presence of multilevel data based on the work of Begg (1999) <doi:10.1111/j.0006-341X.1999.00302.x>, Begg & Paykin (2001) <doi:10.1080/00949650108812115>, and French & Finch (2013) <doi:10.1177/0013164412472341>. Software Depends: R (>= 3.5.0), stats Imports: TestDataImputation, plyr Shenghai Dai <s.dai@wsu.edu> Comprehensive R Archive Network (CRAN) Shenghai Dai [aut, cre], Brian F. French [aut], W. Holmes Finch [aut], Andrew Iverson [aut] GPL (>= 2) 2020-03-20 application/tgz https://CRAN.R-project.org/package=DIFplus doi:10.32614/CRAN.package.DIFplus