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      Item response theory modeling in health outcomes measurement.

      1
      Expert review of pharmacoeconomics & outcomes research
      Informa UK Limited

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          Abstract

          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.

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          Author and article information

          Journal
          Expert Rev Pharmacoecon Outcomes Res
          Expert review of pharmacoeconomics & outcomes research
          Informa UK Limited
          1744-8379
          1473-7167
          Apr 2003
          : 3
          : 2
          Affiliations
          [1 ] National Cancer Institute, 6130 Executive Blvd, MSC 7344, EPN 4005, Bethesda, MD 20892 7344, USA. reeveb@mail.nih.gov
          Article
          10.1586/14737167.3.2.131
          19807361
          18c95e9e-15f7-4937-8686-e310c12d3f79
          History

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