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lordif  

Logistic Ordinal Regression Differential Item Functioning using IRT
View on CRAN: Click here


Download and install lordif package within the R console
Install from CRAN:
install.packages("lordif")

Install from Github:
library("remotes")
install_github("cran/lordif")

Install by package version:
library("remotes")
install_version("lordif", "0.4.2")



Attach the package and use:
library("lordif")
Maintained by
Seung W. Choi
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2009-07-26
Latest Update: 2025-01-09
Description:
Analysis of Differential Item Functioning (DIF) for dichotomous and polytomous items using an iterative hybrid of ordinal logistic regression and item response theory (IRT).
How to cite:
Seung W. Choi (2009). lordif: Logistic Ordinal Regression Differential Item Functioning using IRT. R package version 0.4.2, https://cran.r-project.org/web/packages/lordif. Accessed 06 Mar. 2026.
Previous versions and publish date:
0.1-1 (2009-07-26 20:33), 0.1-2 (2009-10-14 15:44), 0.1-3 (2009-11-05 13:35), 0.1-4 (2009-11-18 08:57), 0.1-5 (2010-07-09 10:43), 0.1-6 (2010-08-20 06:39), 0.1-7 (2010-10-05 10:24), 0.1-8 (2010-10-23 09:44), 0.1-9 (2010-11-30 09:04), 0.1-10 (2011-03-01 10:53), 0.2-1 (2011-11-19 10:56), 0.2-2 (2012-04-05 07:46), 0.3-2 (2015-09-18 08:58), 0.3-3 (2016-03-03 05:56)
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