DIF.Logistic: Logistic regression DIF method

In cswells1/MeasInv: Collection of Methods to Detect Dichotomous and Polytomous Differential Item Functioning (DIF)

Description

Logistic regression DIF method

Usage

DIF.Logistic(data, group, sig.level, purify, output.filename)

Arguments

data	numeric: either the data matrix only, or the data matrix plus the vector of group membership.
group	factor: the vector of group membership
sig.level	numeric: the significance level
purify	logical: Default is FALSE.
output.filename	character: either the file path or file name to save the output

Value

Each list of the output has a data frame with the likelihood-ratio test statistic (G2), its respective p-value, the change in Nagelkerke’s pseudo-R2 between two nested models. In the data frame for both uniform and nonuniform DIF effect simultaneously, the DIF classification is reported.

cswells1/MeasInv documentation built on Dec. 19, 2021, 7 p.m.