Assessment of Differential Item Functioning in Health-Related Outcomes: A Simulation and Empirical Analysis with Hierarchical Polytomous Data.
Zahra SharafiAmin MousaviSeyyed Mohammad Taghi AyatollahiPeyman JafariPublished in: Computational and mathematical methods in medicine (2017)
The current study showed negligible difference between OLR and HOLR in detecting DIF with polytomously scored items in a hierarchical structure. Implications and considerations while analyzing real data were also discussed.