Item response theory and its applications to patient-reported outcomes measurement.
This article provides an overview of item response theory (IRT) models and how they can be appropriately applied to patient-reported outcomes (PROs) measurement. Specifically, the following topics are discussed: (a) basics of IRT, (b) types of IRT models, (c) how IRT models have been applied to date, and (d) new directions in applying IRT to PRO measurements.
Chang
Chih-Hung
CH
Feinberg School of Medicine, Northwestern University, USA.
Reeve
Bryce B
BB
D006302:Health Services Research / Q000379:methods*; D006801:Humans; D008432:Mathematical Computing; D015233:Models, Statistical; D017063:Outcome Assessment, Health Care / Q000379:methods*