Item response theory modeling in health outcomes measurement
There is a great need in health outcomes research to develop instruments that accurately measure a person's health status with minimal response burden. This need for psychometrically sound and clinically meaningful measures calls for better analytical tools beyond the methods available from traditional measurement theory. Applications of item response theory (IRT) modeling have increased considerably because of its utility for instrument development and evaluation, scale scoring, assessment of cultural equivalence, instrument linking and computerized adaptive testing. IRT models the relationship between a person's response to a survey question and their standing on a health construct, such as fatigue or depression. This review will discuss the theory and basics of IRT models and applications of these models to health outcomes measurement.
Duke Scholars
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Related Subject Headings
- Health Policy & Services
- 3801 Applied economics
- 3214 Pharmacology and pharmaceutical sciences
- 1402 Applied Economics
- 1117 Public Health and Health Services
- 1115 Pharmacology and Pharmaceutical Sciences
Citation
Published In
DOI
ISSN
Publication Date
Volume
Issue
Start / End Page
Related Subject Headings
- Health Policy & Services
- 3801 Applied economics
- 3214 Pharmacology and pharmaceutical sciences
- 1402 Applied Economics
- 1117 Public Health and Health Services
- 1115 Pharmacology and Pharmaceutical Sciences