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Evaluating the reliability of multi-item scales: a non-parametric approach to the ordered categorical structure of data collected with the Swedish version of the Tampa Scale for Kinesiophobia and the Self-Efficacy Scale.
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- Bunketorp, Lina, 1975 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för arbetsterapi och fysioterapi,Institute of Occupational Therapy and Physiotherapy
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- Carlsson, Jane, 1946 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för arbetsterapi och fysioterapi,Institute of Occupational Therapy and Physiotherapy
- Kowalski, Jan (author)
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- Medical Journals Sweden AB, 2005
- 2005
- English.
- In: Journal of rehabilitation medicine : official journal of the UEMS European Board of Physical and Rehabilitation Medicine. - : Medical Journals Sweden AB. - 1650-1977. ; 37:5, s. 330-4
- Journal article (peer-reviewed)
Abstract
Subject headings
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- OBJECTIVE: To compare the ability of a rank-invariant non-parametric method with that of kappa statistics to evaluate the reliability of the Swedish version of the Tampa Scale for Kinesiophobia and the Self-Efficacy Scale by identifying systematic and random disagreement. The aim was, further, to compare 2 different statistical approaches to obtain a global value from multi-item scales. DESIGN: A test-retest study. SUBJECTS: A total of 46 patients with whiplash-associated disorders were enrolled and 39 (85%) completed the test-retest assessment. METHODS: Data from the multi-item scales were summarized using both sum and median scores. Paired data were evaluated with a rank-invariant statistical method to identify systematic and random disagreement. Data were also evaluated with kappa statistics. RESULTS: The non-parametric approach demonstrated that the Swedish version of the Tampa Scale for Kinesiophobia and the Self-Efficacy Scale are reliable for patients with whiplash-associated disorders. In contrast to the rank-invariant method, kappa statistics provided no information on disagreement between the 2 test occasions. Median scoring improved reliability due to lack of disagreement while the sum scores method was characterized by random individual disagreement. CONCLUSION: This study has increased understanding of the advantages and limitations of 2 non-parametric statistical methods and, it is hoped, will contribute to the development of reliable measurements.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Kirurgi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Surgery (hsv//eng)
Keyword
- Fear
- physiology
- Follow-Up Studies
- Humans
- Kinesthesis
- physiology
- Movement
- physiology
- Neuropsychological Tests
- Phobic Disorders
- diagnosis
- physiopathology
- Questionnaires
- Reproducibility of Results
- Self Efficacy
- Sweden
- Whiplash Injuries
- diagnosis
- physiopathology
- psychology
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Karolinska Institutet
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