Item Response Theory Reference Manual

Publisher: Stata Press
Copyright: 2023
ISBN-13: 978-1-59718-386-4
Pages: 253
Suggested citation

StataCorp. 2023. Stata 18 Item Response Theory Reference Manual. College Station, TX: Stata Press.

Supplemental materials

Table of contents
irt Introduction to IRT models
Control Panel IRT Control Panel


irt 1pl One-parameter logistic model
irt 1pl postestimation Postestimation tools for irt 1pl


irt 2pl Two-parameter logistic model
irt 2pl postestimation Postestimation tools for irt 2pl


irt 3pl Three-parameter logistic model
irt 3pl postestimation Postestimation tools for irt 3pl


irt grm Graded response model
irt grm postestimation Postestimation tools for irt grm


irt nrm Nominal response model
irt nrm postestimation Postestimation tools for irt nrm


irt pcm Partial credit model
irt pcm postestimation Postestimation tools for irt pcm


irt rsm Rating scale model
irt rsm postestimation Postestimation tools for irt rsm


irt hybrid Hybrid IRT models
irt hybrid postestimation Postestimation tools for irt hybrid


irt, group() IRT models for multiple groups
irt, group() postestimation Postestimation tools for group IRT


irt constraints Specifying constraints


estat report Report estimated IRT parameters
estat greport Report estimated group IRT parameters


irtgraph icc Item characteristic curve plot
irtgraph tcc Test characteristic curve plot
irtgraph iif Item information function plot
irtgraph tif Test information function plot


DIF Introduction to differential item functioning
diflogistic Logistic regression DIF
difmh Mantel—Haenszel DIF


Glossary


Combined author index
Combined subject index