Cross-cultural Adaptation and Validation of the European Portuguese Version of the Western Ontario Shoulder Instability Index (WOSI)

Authors

  • Rui Manuel Torres Department of Physiotherapy. CESPU. North Polytechnic Institute of Health. Paredes. Department of Physiotherapy. Center for Rehabilitation Research. Polytechnic Institute of Oporto. Oporto. https://orcid.org/0000-0002-4041-270X
  • Sara Isabel Faria Department of Physiotherapy. School of Health. Polytechnic Institute of Oporto. Oporto.
  • Luís Manuel Cavalheiro Department of Physiotherapy. Coimbra Health School. Polytechnic Institute of Coimbra. Coimbra. Centre for Health Studies and Research. University of Coimbra. Coimbra. https://orcid.org/0000-0003-3280-6968
  • Pedro Lopes Ferreira Centre for Health Studies and Research. University of Coimbra. Coimbra. Faculty of Economics. University of Coimbra. Coimbra. Coimbra. https://orcid.org/0000-0002-9448-9542
  • Rui Soles Gonçalves Department of Physiotherapy. Coimbra Health School. Polytechnic Institute of Coimbra. Coimbra. Centre for Health Studies and Research. University of Coimbra. Coimbra. https://orcid.org/0000-0002-6118-0338

DOI:

https://doi.org/10.20344/amp.15119

Keywords:

Cross-Cultural Comparison, Patient Outcome Assessment, Portugal, Quality of Life, Shoulder Dislocation, Shoulder Joint, Surveys and Questionnaires, Translations

Abstract

Introduction: The Western Ontario Shoulder Instability Index (WOSI) is a self-administered questionnaire specifically used to determine the impact of shoulder instability on quality of life. The aim of this study was to translate the WOSI into European Portuguese and analyze its validity and reliability in a population with shoulder instability.
Material and Methods: The WOSI was translated and culturally adapted from its original version into European Portuguese (WOSIPT). Internal consistency and test-retest analyses were conducted to determine the level of reliability of the scale. WOSI-PT, Quick-DASH, and SF-12 questionnaires were applied to 81 patients with symptomatic shoulder instability to assess validity, and reliability was tested by randomly selecting 50 patients within 72 hours using a test-retest design.
Results: The reliability of the WOSI-PT was very high, with Cronbach´s alpha equal to 0.97 and an intraclass correlation coefficient of 0.98. Regarding the construct validity, the correlation between the WOSI-PT and QuickDASH was high and negative (-0.79). The correlations between WOSI-PT and SF-12 were positive, respectively, moderate with physical (0.66) and low with mental (0.34) health.
Conclusion: WOSI-PT is a reliable and valid instrument for assessing the functional impact of shoulder joint instability on quality of life.

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Author Biographies

Rui Manuel Torres, Department of Physiotherapy. CESPU. North Polytechnic Institute of Health. Paredes. Department of Physiotherapy. Center for Rehabilitation Research. Polytechnic Institute of Oporto. Oporto.

Department of physiotherapy.

Sara Isabel Faria, Department of Physiotherapy. School of Health. Polytechnic Institute of Oporto. Oporto.

Department of Physiotherapy

Luís Manuel Cavalheiro, Department of Physiotherapy. Coimbra Health School. Polytechnic Institute of Coimbra. Coimbra. Centre for Health Studies and Research. University of Coimbra. Coimbra.

Department of Physiotherapy

Rui Soles Gonçalves, Department of Physiotherapy. Coimbra Health School. Polytechnic Institute of Coimbra. Coimbra. Centre for Health Studies and Research. University of Coimbra. Coimbra.

Department of Physiotherapy

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Published

2022-07-01

How to Cite

1.
Torres RM, Faria SI, Cavalheiro LM, Lopes Ferreira P, Soles Gonçalves R. Cross-cultural Adaptation and Validation of the European Portuguese Version of the Western Ontario Shoulder Instability Index (WOSI). Acta Med Port [Internet]. 2022 Jul. 1 [cited 2022 Dec. 7];35(7-8):522-8. Available from: https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/15119