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. 2024 Dec;56(1):2409962.
doi: 10.1080/07853890.2024.2409962. Epub 2024 Oct 1.

Cross-cultural adaptation and test-retest reliability assessment of a Swedish version of the exercise adherence rating scale in patients after shoulder surgery

Johanna Söderberg  1 , Ellen Sallfeldt  1 , Eva Ribom  1 , Charlotte Urell  2
Affiliations

Cross-cultural adaptation and test-retest reliability assessment of a Swedish version of the exercise adherence rating scale in patients after shoulder surgery

Johanna Söderberg et al. Ann Med. 2024 Dec.

Abstract

Background: Adherence to prescribed home exercise is an important predictor for the long-term effectiveness of exercise therapy and therefore important to evaluate. The Exercise Adherence Rating Scale (EARS) is a valid and reliable tool to assess exercise adherence behavior, but it is not translated into Swedish. This study aimed to translate EARS into Swedish and to explore the psychometric properties in terms of test-retest reliability, internal consistency as well and possible floor-/ceiling effects.

Materials and methods: A translation and cultural adaptation process followed international guidelines and resulted in EARS-Sv. A total of 30 patients who had undergone shoulder surgery were included in the study and filled out EARS-Sv at two different time points. The test-retest reliability was evaluated through the weighted kappa coefficient and Intraclass Correlation Coefficient (ICC). Cronbach's alpha was used to assess internal consistency. Floor-/ceiling effects were calculated.

Results: The test-retest reliability of the questionnaire was good with ICC (0.79, CI 95%) and moderate with weighted kappa-coefficient (MD= 0.58). Cronbach's alpha was considered good (0.88). A ceiling effect was registered in all 6 items of EARS-Sv.

Conclusion: EARS-Sv has moderate to good test-retest reliability and good internal consistency in patients who have undergone shoulder surgery.

Keywords: Exercise therapy; Swedish; psychometric; questionnaire; shoulder.

Plain language summary

The postoperative results in orthopaedic patients are often dependent on adherence to postoperative home rehabilitation programs.Exercise Adherence Rating Scale (EARS) is a questionnaire assessing adherence to prescribed home exercise and the Swedish version has an acceptable test-retest reliability and good internal consistency for patients who have undergone shoulder surgery.The Swedish version of EARS could be used as a tool to identify patients having difficulties adhering to the prescribed home exercises.

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Conflict of interest statement

No potential conflict of interest was reported by the author(s).

Figures

Figure 1.
Figure 1.
Flow-chart over the development of the Swedish version of EARS.
Figure 2.
Figure 2.
Bland-Altman plot for EARS-Sv describing agreement between two measurements, with an interval of 2-4 weeks between the two test points.
See this image and copyright information in PMC

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