iMPACT3: Internet-Based Development and Administration of Utility Elicitation Protocols

L. A. Lenert, A. Sturley and M. E. Watson
Additional contact information
L. A. Lenert: Veterans Administration Healthcare System, San Diego, CA, Department of Medicine, University of California, San Diego, La Jolla, CA, Veterans Medical Research Foundation of San Diego, San Diego, CA
A. Sturley: Veterans Medical Research Foundation of San Diego, San Diego, CA
M. E. Watson: Global Health Outcomes, GlaxoSmithKline, Research Triangle Park, NC

Medical Decision Making, 2002, vol. 22, issue 6, 464-474

Abstract: iMPACT3 (Internet Multimedia Preference Assessment Instrument Construction Tool, version 3) is a software development environment that helps researchers build Internet-capable multimedia utility elicitation software programs. The program is a free, openly accessible Web site (http://preferences.ucsd.edu/impact3/asp). To develop a utility elicitation software program using iMPACT3, a researcher selects modular protocol components from a library and custom tailors the components to the details of his or her research protocol. iMPACT3 builds a Web site implementing the protocol and downloads it to the researcher’s computer. In a study of 75 HIV-infected patients, an iMPACT3-generated protocol showed substantial evidence of construct validity and good internal consistency (logic error rates of 4% to 10% and procedural invariance error rates of 10% to 26%, depending on the elicitation method) but only fair 3- to 6-week test-retest reliability (intraclass correlation coefficient = 0.42 to 0.55). Further work may be needed on specific utility assessment procedures, but this study’s results confirm iMPACT3’s feasibility in facilitating the collection of health state utility data.

Keywords: computers; quality of life; cost-effectiveness analysis; decision support systems; utilities (search for similar items in EconPapers)
Date: 2002
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Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:sae:medema:v:22:y:2002:i:6:p:464-474

DOI: 10.1177/0272989X02238296

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