Man pages for difR
Collection of Methods to Detect Dichotomous and Polytomous Differential Item Functioning (DIF)

breslowDayBreslow-Day DIF statistic
contrastMatrixContrast matrix for computing generalized Lord's chi-squared...
dichoDifComparison of DIF detection methods
difBDBreslow-Day DIF method
difGenLogisticGeneralized logistic regression DIF method
difGenLordGeneralized Lord's chi-squared DIF method
difGMHGeneralized Mantel-Haenszel DIF method
difLogisticLogistic regression DIF method
difLogRegGeneral logistic regression DIF method
difLordLord's chi-squared DIF method
difLRTLikelihood-Ratio Test DIF method
difMantel.polyMantel Differential Item Functionning Detection for...
difMHMantel-Haenszel DIF method
difPolyLogisticLogistic regression DIF statistics for polytomous (ordinal)...
difQuadeDetection of Differential Item Functioning Using Quade-Type...
difRajuRaju's area DIF method
difR-packageCollection of methods to detect dichotomous and polytomous...
difSIBTESTSIBTEST and Crossing-SIBTEST DIF method
difStdStandardization DIF method
difTIDTransformed Item Difficulties (TID) DIF method
genDichoDifComparison of DIF detection methods among multiple groups
genLogistikGeneralized logistic regression DIF statistic
genLordChi2Generalized Lord's chi-squared DIF statistic
genMantelHaenszelGeneralized Mantel-Haenszel DIF statistic
itemPar1PLItem parameter estimation for DIF detection using Rasch (1PL)...
itemPar2PLItem parameter estimation for DIF detection using 2PL model
itemPar3PLItem parameter estimation for DIF detection using 3PL model
itemPar3PLconstItem parameter estimation for DIF detection using constrained...
itemParEstItem parameter estimation for DIF detection
itemRescaleRescaling item parameters by equal means anchoring
LassoDataRearrange the data matrix for the Detection of DIF using the...
lassoDIF.ABWICDetection of Differential Item Functioning Using the Lasso...
lassoDIF.CVDetection of Differential Item Functioning Using the Lasso...
liu_agresti_ccorLiu-Agresti Common Cumulative Odds Ratio
LogistikLogistic regression DIF statistic
LogistikPolyDetection of DIF in polytomous (ordinal) items using...
LordChi2Lord's chi-square DIF statistic
LRTLikelihood-Ratio Test DIF statistic
mantelHaenszelMantel-Haenszel DIF statistic
plot_lasso_pathsPlot coefficient paths from LASSO DIF
RajuZRaju's area DIF statistic
SCSSexual Compulsivity Scale Data Set
selectDifSelection of one of the DIF detection methods
selectGenDifSelection of one of the DIF detection methods among multiple...
sibTestSIBTEST DIF statistic
SimDichoDifGeneration of DIF for dichotomous items
SimPolyDifGeneration of DIF for polytomous items
stdPDIFStandardization DIF statistic
subtestLogisticTesting for DIF among subgroups with generalized logistic...
verbalVerbal Aggression Data Set
difR documentation built on June 8, 2025, 1:03 p.m.