J Marquardt1, T Schöttker-Königer2, A Schäfer2. 1. Hildesheim/Holzminden/Göttingen, Fachbereich Soziale Arbeit und Gesundheit, Hochschule für Angewandte Wissenschaft und Kunst (HAWK), Goschentor 1, Hildesheim, Deutschland. jomarquardt@web.de. 2. Hildesheim/Holzminden/Göttingen, Fachbereich Soziale Arbeit und Gesundheit, Hochschule für Angewandte Wissenschaft und Kunst (HAWK), Goschentor 1, Hildesheim, Deutschland.
Abstract
BACKGROUND: Elbow complaints are complex problems leading to severe consequences for affected people and the healthcare system. The German version of the Oxford Elbow Score (OES) is the first German-speaking instrument that specifically measures elbow complaints from the patient's perspective and changes of their health status. OBJECTIVE: The aim of this study is the validation of the German version of the OES. In this context the internal consistency and the construct validity were investigated. MATERIALS AND METHODS: 59 patients with elbow complaints completed the German version of the OES, the DASH and the SF-36 in a cross-sectional study. The internal consistency was calculated with Cronbach's alpha coefficients. Spearman's correlation coefficients were used to confirm construct validity. RESULTS: Cronbach's alpha for pain, function and psychological subscales was 0.88, 0.81 and 0.90, respectively. The whole questionnaire presents a Cronbach's alpha value of 0.93. Convergent construct validity was confirmed with correlation coefficients containing values of -0.84, -0.77 and -0.82 compared to DASH and values ranging from 0.41 to 0.80 compared with the physical domains of the SF-36. The divergent construct validity presented values ranging from 0.07 to 0.20 with the SF-36 domains of "general health perception" and "mental health". CONCLUSION: The German OES is an internal consistent instrument with good convergent and divergent construct validity. Other aspects of the validity, the reliability and the responsiveness should be confirmed through further studies.
BACKGROUND: Elbow complaints are complex problems leading to severe consequences for affected people and the healthcare system. The German version of the Oxford Elbow Score (OES) is the first German-speaking instrument that specifically measures elbow complaints from the patient's perspective and changes of their health status. OBJECTIVE: The aim of this study is the validation of the German version of the OES. In this context the internal consistency and the construct validity were investigated. MATERIALS AND METHODS: 59 patients with elbow complaints completed the German version of the OES, the DASH and the SF-36 in a cross-sectional study. The internal consistency was calculated with Cronbach's alpha coefficients. Spearman's correlation coefficients were used to confirm construct validity. RESULTS: Cronbach's alpha for pain, function and psychological subscales was 0.88, 0.81 and 0.90, respectively. The whole questionnaire presents a Cronbach's alpha value of 0.93. Convergent construct validity was confirmed with correlation coefficients containing values of -0.84, -0.77 and -0.82 compared to DASH and values ranging from 0.41 to 0.80 compared with the physical domains of the SF-36. The divergent construct validity presented values ranging from 0.07 to 0.20 with the SF-36 domains of "general health perception" and "mental health". CONCLUSION: The German OES is an internal consistent instrument with good convergent and divergent construct validity. Other aspects of the validity, the reliability and the responsiveness should be confirmed through further studies.
Entities:
Keywords:
Elbow joint; Outcome assessment, patient; Patient-centered outcomes research; Reliability of Results; Reproducibility of findings
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