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Procedures to develop a computerized adaptive test to assess patient-reported physical functioning.

Erin McCabe1, Douglas P Gross2, Okan Bulut3

  • 1Department of Rehabilitation Science, University of Alberta, 3-48 Corbett Hall, Edmonton, AB, T6G 2G4, Canada. emccabe@ualberta.ca.

Quality of Life Research : an International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation
|June 9, 2018
PubMed
Summary
This summary is machine-generated.

This study shows how to create a computerized adaptive patient-reported outcome (PRO) measure for physical functioning. This efficient method reduces testing time without losing important patient data.

Keywords:
AssessmentComputerized adaptive testingItem response theoryPatient-reported outcome measurePhysical functionWork disability

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Area of Science:

  • Health outcomes research
  • Psychometrics
  • Digital health

Background:

  • Patient-reported outcome (PRO) measures are crucial for assessing health status.
  • Traditional PRO measures can be lengthy and burdensome for patients.
  • Developing efficient and precise PRO measures is an ongoing challenge.

Purpose of the Study:

  • To demonstrate the development and implementation of a computerized adaptive test (CAT) for PRO measurement.
  • To utilize secondary data analysis and existing legacy measures for creating a CAT item bank.
  • To assess the feasibility and efficiency of CAT for physical functioning assessment.

Main Methods:

  • Secondary analysis of a dataset from 1429 individuals with work-related lower extremity impairment.
  • Item response theory (IRT) calibration of three physical functioning measures.
  • Computer simulations to evaluate different CAT designs for efficiency and precision.

Main Results:

  • Item response theory and factor analyses supported a 31-item CAT item bank.
  • Item parameters were calculated using the generalized partial credit model.
  • Simulations indicated that reducing test length to 8 or 20 items maintained high correlation (95-99%) with legacy measures.

Conclusions:

  • Computerized adaptive testing (CAT) is a feasible and efficient method for PRO measurement of physical functioning.
  • The outlined procedures are straightforward and adaptable to other PRO measures.
  • Implementation details for the physical functioning CAT are available in supplementary materials.