Developing an Initial Physical Function Item Bank from Existing Sources

Rita K. Bode*, David Cella, Jin-Shei Lai, Allen Walter Heinemann

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

The objective of this article is to illustrate incremental item banking using health-related quality of life data collected from two samples of patients receiving cancer treatment. The kinds of decisions one faces in establishing an item bank for computerized adaptive testing are also illustrated. Pre-calibration procedures include: identifying common items across databases; creating a new database with data from each pool; reversescoring "negative" items; identifying rating scales used in items; identifying pivot points in each rating scale; pivot anchoring items at comparable rating scale categories; and identifying items in each instrument that measure the construct of interest. A series of calibrations were conducted in which a small proportion of new items were added to the common core and misfitting items were identified and deleted until an initial item bank has been developed.

Original languageEnglish (US)
Pages (from-to)124-136
Number of pages13
JournalJournal of applied measurement
Volume4
Issue number2
StatePublished - Dec 29 2003

ASJC Scopus subject areas

  • Medicine(all)

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