Patient Related Outcome Measures
Open access peer-reviewed scientific and medical journals.
Dove Medical Press is now a member of the Open Access Initiative
An Author's Guide
A guide to help authors get their paper published.
Support Open Access and Dove Press
Promotional Article Monitoring - further details
Favored Author Program
Real benefits for authors, including fast-track processing of papers.
Rasch analysis of the Dutch version of the Oxford elbow score
(3818) Total Article Views
Authors: de Haan J, Schep NW, Tuinebreijer WE, Patka P, den Hartog D
Published Date August 2011
Volume 2011:2 Pages 145 - 149
Jeroen de Haan1, Niels Schep2, Wim Tuinebreijer2, Peter Patka2, Dennis den Hartog2
1Department of Surgery and Traumatology, Westfriesgasthuis, Hoorn, the Netherlands; 2Department of Surgery and Traumatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
Background: The Oxford elbow score (OES) is a patient-rated, 12-item questionnaire that measures quality of life in relation to elbow disorders. This English questionnaire has been proven to be a reliable and valid instrument. Recently, the OES has been translated into Dutch and examined for its reliability, validity, and responsiveness in a group of Dutch patients with elbow pathology. The aim of this study was to analyze the Dutch version of the OES (OES-DV) in combination with Rasch analysis or the one-parameter item response theory to examine the structure of the questionnaire.
Methods: The OES-DV was administered to 103 patients (68 female, 35 male). The mean age of the patients was 44.3 ± 14.7 (range 15–75) years. Rasch analysis was performed using the Winsteps® Rasch Measurement Version 18.104.22.168 and a rating scale parameterization.
Results: The person separation index, which is a measure of person reliability, was excellent (2.30). All the items of the OES had a reasonable mean square infit or outfit value between 0.6 and 1.7. The threshold of items were ordered, so the categories can function as intended. Principal component analysis of the residuals partly confirmed the multidimensionality of the English version of the OES. The OES distinguished 3.4 strata, which indicates that about three ranges can be differentiated.
Conclusion: Rasch analysis of the OES-DV showed that the data fit to the stringent Rasch model. The multidimensionality of the English version of the OES was partly confirmed, and the four items of the function and three items of the pain domain were recognized as separate domains. The category rating scale of the OES-DV works well. The OES can distinguish 3.4 strata. This conclusion can only be applied to elbow dislocations, which were the largest group of patients studied.
Keywords: elbow, questionnaire, quality of life, traumatology, modern test theory, reliability, outcomes
Cannotea Citeulike Del.icio.us Facebook LinkedIn Twitter
Readers of this article also read:
"You do a tremendous job!!" Ruben Restrepo, University of Texas Health Science Center, San Antonio.
- Health literacy and health seeking behavior among older men in a middle-income nation
- Prolonged rupture of membranes in term infants: should all babies be screened?
- Increasing access to quality health care for the poor: Community perceptions on quality care in Uganda
- Narcissistic rage: The Achilles’ heel of the patient with chronic physical illness