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Calibration of an item bank in 474 orthopedic patients using Rasch analysis for computer-adaptive assessment of anxiety

ORCID
0000-0002-2209-0516
Zugehörige Organisation
Department of Clinical Psychology and Psychotherapy, Institute of Psychology and Education, University of Ulm, Ulm, Germany
Kallinger, Selina;
Zugehörige Organisation
Department of Clinical Psychology and Psychotherapy, Institute of Psychology and Education, University of Ulm, Ulm, Germany
Scharm, Henry;
GND
137926561
Zugehörige Organisation
Institute of Medical Psychology and Medical Sociology, University Hospital of RWTH Aachen, Aachen, Germany
Böcker, Maren;
GND
137232632
LSF
59807
Zugehörige Organisation
Department of Clinical Psychology, University of Duisburg-Essen, Essen, Germany
Forkmann, Thomas;
GND
17373104X
Zugehörige Organisation
Department of Clinical Psychology and Psychotherapy, Institute of Psychology and Education, University of Ulm, Ulm, Germany
Baumeister, Harald

Objective: To calibrate an item bank of anxiety-related questions for use in orthopedic patients within a computer-adaptive test.

Design: This is a psychometric study. Setting: The sample of orthopedic patients was recruited in two orthopedic rehabilitation clinics in Germany.

Subjects: A total of 474 orthopedic rehabilitation patients were recruited for this study.

Interventions: Not applicable.

Main measures: The main measure is an adapted version of an existing anxiety item pool for cardiovascular rehabilitation patients.

Results: The results of the confirmatory factor analysis and Mokken analysis confirmed a one-factor structure and double monotonicity. An anxiety item bank (48 items) could be developed and calibrated using Rasch analysis. It fitted to the Rasch model with a non-significant item–trait interaction ( χ 2 (203) = 172.59; P  = .94) and was free of differential item functioning. Unidimensionality could be verified and the person separation reliability was .96. The category threshold parameters varied between 4.72 and 3.16 (7.88 logits).

Conclusion: The unidimensional anxiety item bank provides the basis for a computer-adaptive test to assess a wide range of anxiety in rehabilitation patients with orthopedic diseases with very good psychometric characteristics.

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Einordnung

Datum der Veröffentlichung:
24.04.2019
URN:
urn:nbn:de:hbz:464-20210505-122138-2
DOI:
10.1177/0269215519846225
Sprache:
Englisch
Ressourcentyp:
Text
Schlagwörter:
Anxiety; orthopedic disease; computer-adaptive test; item bank; item response theory; Rasch model
Kollektion:
E-Publikationen
Sachgruppen der Deutschen Nationalbibliographie:
610 Medizin, Gesundheit
Sachgruppen der Deutschen Nationalbibliographie:
150 Psychologie
Einrichtung:
Fakultät für Bildungswissenschaften, Institut für Psychologie, Klinische Psychologie und Psychotherapie
Förderung:
Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
Förderung:
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This study was funded by the German Insurance Scheme (Grant No. 8011-106-31/31.117). It was conducted within the framework of the project “Implementation of computer-adaptive initial- and follow up assessment of health-related functioning in orthopedic and cardiological rehabilitation.” The funders had no role in study design, data collection and analysis, decision to publish or preparation of the manuscript.
Informationen zur Erstveröffentlichung:

Kallinger, S., Scharm, H., Boecker, M., Forkmann, T., & Baumeister, H. (2019). Calibration of an item bank in 474 orthopedic patients using Rasch analysis for computer-adaptive assessment of anxiety. Clinical Rehabilitation, 33(9), 1468–1478. https://doi.org/10.1177/0269215519846225

Article first published online: April 24, 2019

 

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