Item banks and their potential applications to health status assessment in diverse populations

Elizabeth A. Hahn*, David Cella, Rita K. Bode, Richard Gershon, Jin Shei Lai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

In the context of an ethnically diverse, aging society, attention is increasingly turning to health-related quality of life measurement to evaluate healthcare and treatment options for chronic diseases. When evaluating and treating symptoms and concerns such as fatigue, pain, or physical function, reliable and accurate assessment is a priority. Modern psychometric methods have enabled us to move from long, static tests that provide inefficient and often inaccurate assessment of individual patients, to computerized adaptive tests (CATs) that can precisely measure individuals on health domains of interest. These modern methods, collectively referred to as item response theory (IRT), can produce calibrated "item banks" from larger pools of questions. From these banks, CATs can be conducted on individuals to produce their scores on selected domains. Item banks allow for comparison of patients across different question sets because the patient's score is expressed on a common scale. Other advantages of using item banks include flexibility in terms of the degree of precision desired; interval measurement properties under most circumstances; realistic capability for accurate individual assessment over time (using CAT); and measurement equivalence across different patient populations. This work summarizes the process used in the creation and evaluation of item banks and reviews their potential contributions and limitations regarding outcome assessment and patient care, particularly when they are applied across people of different cultural backgrounds.

Original languageEnglish (US)
Pages (from-to)S189-S197
JournalMedical care
Volume44
Issue number11 SUPPL. 3
DOIs
StatePublished - Nov 2006

Keywords

  • Computerized adaptive testing
  • Crosscultural measurement
  • Health-related quality of life
  • Item banks
  • Item response theory

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

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