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DIFplus (version 1.1)

Multilevel Mantel-Haenszel Statistics for Differential Item Functioning Detection

Description

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) , Begg & Paykin (2001) , and French & Finch (2013) .

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Version

Install

install.packages('DIFplus')

Monthly Downloads

190

Version

1.1

License

GPL (>= 2)

Maintainer

Shenghai Dai

Last Published

March 20th, 2020

Functions in DIFplus (1.1)

ContigencyTables

Function to create contigency tables
ML.DIF

Main function to compute adjusted Mantel-Haenszel statistics
data.adult

Data Example (binary)
data.ordinal

Data Example (Ordinal)
data.adult.revised

Modified data.adult by removing all strata with zero marginal means.