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Reliability and validity issues related to interactive tailored patient assessments: a case study
Cornelia M Ruland1, Suzanne Bakken, Jo Røislien
1Center for Shared Decision Making and Nursing Research, Rikshospitalet Medical Center, Oslo, Norway. cornelia.ruland@rr-research.no
Journal of Medical Internet Research
|October 19, 2007
Summary
Interactive tailored patient assessment (ITPA) tools lack reliability and validity evidence. This paper guides informatics researchers on appropriate assessment methods for ITPA tools, using a case study.
Area of Science:
- Health Informatics
- Psychometrics
- Medical Informatics
Background:
- Interactive tailored patient assessment (ITPA) tools are increasingly common in research.
- Evidence of their reliability and validity is often lacking, questioning their research utility.
- Traditional psychometric methods are not always suitable for evaluating ITPA tools.
Purpose of the Study:
- To differentiate ITPA tools from traditional psychometric instruments.
- To review standard reliability and validity assessment techniques.
- To identify appropriate methods for evaluating ITPA tools and provide practical guidance.
Main Methods:
- Comparison of ITPA tools with classical test theory-based instruments.
- Summary of psychometric measurement techniques for reliability and validity.
- Discussion of method applicability to ITPA tools.
- Case study illustration of feasible techniques.
Main Results:
- Key differences between ITPA and traditional instruments are highlighted.
- Applicability of various reliability and validity methods to ITPA is discussed.
- A tailored symptom assessment instrument, Choice, was used to demonstrate feasible evaluation techniques.
Conclusions:
- Guidance is provided for informatics researchers on assessing ITPA reliability and validity.
- The paper emphasizes the need for appropriate methods to ensure the quality of ITPA tools.
- Case study demonstrates practical application of recommended techniques.
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