1. Examining Differential Item Functioning (DIF) in Self-Reported Health Survey Data: Via Multilevel Modeling
- Author
-
Kaptur, Dandan Chen, Liu, Yiqing, Kaptur, Bradley, Peterman, Nicholas, Zhang, Jinming, Kern, Justin, and Anderson, Carolyn
- Subjects
Statistics - Applications - Abstract
Few health-related constructs or measures have received a critical evaluation in terms of measurement equivalence, such as self-reported health survey data. Differential item functioning (DIF) analysis is crucial for evaluating measurement equivalence in self-reported health surveys, which are often hierarchical in structure. Traditional single-level DIF methods in this case fall short, making multilevel models a better alternative. We highlight the benefits of multilevel modeling for DIF analysis, when applying a health survey data set to multilevel binary logistic regression (for analyzing binary response data) and multilevel multinominal logistic regression (for analyzing polytomous response data), and comparing them with their single-level counterparts. Our findings show that multilevel models fit better and explain more variance than single-level models. This article is expected to raise awareness of multilevel modeling and help healthcare researchers and practitioners understand the use of multilevel modeling for DIF analysis., Comment: preprint, 11 pages (excluding references)
- Published
- 2024