Reliability, Validity and Responsiveness of the Polish Version of the Western Ontario Shoulder Instability Index (WOSI-PL) in Patients after Arthroscopic Repair for Shoulder Instability

Agnieszka Bejer (), Jędrzej Płocki, Marek Kulczyk, Sharon Griffin, Ireneusz Kotela and Andrzej Kotela
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Agnieszka Bejer: Institute of Health Sciences, College of Medical Sciences, University of Rzeszow, Rejtana 16C, 35-959 Rzeszow, Poland
Jędrzej Płocki: Department of Physiotherapy, Collegium Medicum, University of Information Technology and Management in Rzeszow, Sucharskiego 2, 35-225 Rzeszow, Poland
Marek Kulczyk: The Holy Family Specialist Hospital, Rudna Mała 600, 36-060 Głogów Małopolski, Poland
Sharon Griffin: Fowler Kennedy Sport Medicine Clinic, Faculty of Medicine, University of Western Ontario, 3M Centre, 1151 Richmond Street, London, ON N6A 3K7, Canada
Ireneusz Kotela: Institute of Health Sciences, Collegium Medicum, The Jan Kochanowski University, IX Wieków Kielc 19a, 25-317 Kielce, Poland
Andrzej Kotela: Department of Orthopaedic Surgery and Traumatology, Central Clinical Hospital of the Ministry of Interior, Wołoska 137, 02-507 Warsaw, Poland

IJERPH, 2022, vol. 19, issue 21, 1-12

Abstract: Apart from imaging and physical examination for shoulder instability (SI), medical history with patient feedback should be considered to assess the patient’s condition and recovery. The aim of this study was to evaluate psychometric properties of the Polish version of Western Ontario Shoulder Instability Index (WOSI)—one of the most frequently used patient-reported outcome measures for SI. During examination 1, 74 patients after arthroscopic repair for SI (age x ¯ = 30.01 ± 8.98) were tested. Examinations 2 and 3 involved 71 and 51 patients, respectively. They completed the Polish version of the WOSI, the shortened version of the Disabilities of Arm, Shoulder and Hand Questionnaire (QuickDASH), the Short Form-36 version 2.0 (SF-36 v. 2.0) and 7-point Global Rating Change scale (GRC). The WOSI-PL demonstrated high internal consistency (Cronbach’s alpha for total = 0.94), and test–retest reliability (Total ICC 2,1 = 0.99). High construct validity was found (89%) as the a priori hypotheses were confirmed. All domains and total scores of WOSI-PL showed a moderate to strong degree of responsiveness (ES = 0.37–0.44; SMR = 0.87–1.26). Minimal clinically important difference (MCID) for the Total WOSI-PL was 126.43 points/6% (95%CI 67.83–185.03) by the anchor-based method and 174.05 points/8% (95%CI 138.61–233.98) by the distribution-based method. The Polish version of the WOSI can be considered a reliable, valid and responsive PROM. It is recommended for assessing the quality of life in patients after arthroscopic repair for SI and can be applied in research and in the clinical setting for monitoring treatment and facilitating patient-centred therapeutic decisions.

Keywords: shoulder instability; validation; psychometrics; questionnaire; WOSI; arthroscopy; physiotherapy (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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