Cross-cultural adaptation and validation of the German version of the Western Ontario shoulder instability index

Hofstaetter, Jochen G.; Hanslik-Schnabel, Beatrice; Hofstaetter, Stefan G.; Wurnig, Christian; Huber, Wolfgang

doi:10.1007/s00402-009-1033-3

Cited by 42 publications

(29 citation statements)

References 40 publications

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“…Because there are no domains in OISS, the internal consistency covers the total score of all 12 items. For WOSI findings are in keeping previous versions [37,38], but higher than those reported for the domain lifestyle [39,40]. For EQ-VAS, the Chronbach’s alpha was in keeping with the results of Adobor et al [41], slightly lower for EQ-5D.…”

Section: Discussionsupporting

confidence: 85%

Evaluation of Oxford instability shoulder score, Western Ontario shoulder instability Index and Euroqol in patients with slap (superior labral anterior posterior) lesions or recurrent anterior dislocations of the shoulder

et al. 2013

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BackgroundHaving an estimate of the measurement error of self-report questionnaires is important both for assessing follow-up results after treatment and when planning intervention studies. Specific questionnaires have been evaluated for patients with shoulder instability, but not in particular for patients with SLAP (superior labral anterior posterior) lesions or recurrent dislocations. The aim of this study was to evaluate the agreement, reliability, and validity of two commonly questionnaires developed for patients with shoulder instability and a generic questionnaire in patients with SLAP lesions or recurrent anterior shoulder dislocations.MethodsSeventy-one patients were included, 33 had recurrent anterior dislocations and 38 had a SLAP lesion. The patients filled in the questionnaires twice at the same time of the day (± 2 hours) with a one week interval between administrations. We tested the Oxford Instability Shoulder Score (OISS) (range 12 to 60), the Western Ontario Shoulder Instability Index (WOSI) (0 to 2100), and the EuroQol: EQ-5D (−0.5 to 1.0) and EQ-VAS (0 to 100). Hypotheses were defined to test validity.ResultsICC ranged from 0.89 (95% CI 0.83 to 0.93) to 0.92 (0.87 to 0.95) for OISS, WOSI, and EQ-VAS and was 0.66 (0.50 to 0.77) for EQ-5D. The limits of agreement for the scores were: -7.8 to 8.4 for OISS; -339.9 to 344.8 for WOSI; -0.4 to 0.4 for EQ-5D; and −17.2 and 16.2 for EQ-VAS. All questionnaires reflect the construct that was measured. The correlation between WOSI and OISS was 0.73 and ranged from 0.49 to 0.54 between the shoulder questionnaires and the generic questionnaires. The divergent validity was acceptable, convergent validity failed, and known group validity was acceptable only for OISS.ConclusionMeasurement errors and limitations in validity should be considered when change scores of OISS and WOSI are interpreted in patients with SLAP lesions or recurrent shoulder dislocations. EQ-5D is not recommended as a single outcome.

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Section: Discussionsupporting

confidence: 85%

Evaluation of Oxford instability shoulder score, Western Ontario shoulder instability Index and Euroqol in patients with slap (superior labral anterior posterior) lesions or recurrent anterior dislocations of the shoulder

et al. 2013

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“…Studies performed by Salomonsson et al, Hofstaetter et al, and Cacciho et al [11,12,15] all had smaller patient populations (32, 25, and 30, respectively) and differed in their treatment-free test–retest interval. Hoffsaetter et al and Cacchio et al used a test–retest interval of 24–72 h and 3 days or 14 weeks, respectively.…”

Section: Discussionmentioning

confidence: 99%

Measurement properties of the Western Ontario Shoulder Instability Index in Dutch patients with shoulder instability

Linde

Willems²,

Kampen

et al. 2014

BMC Musculoskelet Disord

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BackgroundThe Western Ontario Shoulder Instability index (WOSI) is a patient-reported outcome measure for patients with shoulder instability. The purpose of this study was to validate the WOSI in a Dutch population by evaluating its structural validity, internal consistency, measurement error, reliability, and construct validity. Floor and ceiling effects were also addressed.MethodsTwo cohorts were recruited, including a total of 138 patients with shoulder instability. Confirmatory factor analysis was used to assess the structural validity and Cronbach’s α to assess internal consistency. The measurement error was calculated as the smallest detectable change (SDC). Reliability (test–retest) was estimated in a subgroup of 99 patients who completed the re-test after a mean of 13 days (5–30 days). Reliability was calculated with the intraclass correlation coefficient (ICC). Construct validity was evaluated by comparing the WOSI with the Oxford Shoulder Instability Score (OSIS), the Simple Shoulder Test, the Oxford Shoulder Score, the Disability of the Arm, Shoulder, and Hand assessment (DASH), and the Short Form-36 Health Survey. Measurement properties were evaluated for both the total WOSI score and its four domains.ResultsFactor analysis did not confirm the validity of the four domains. Best results were found for a one-factor model. Internal consistency was good, with Cronbach’s α ranging from 0.93 to 0.96. Reliability was excellent (ICC 0.88–0.92 for all subscales). The measurement error (SDC) was 23.0% for the total WOSI and 23% to 28% for the subscales (on a scale of 0–100). Regarding the construct validity, 76% of the results were in accordance with the hypotheses, including a high correlation with the OSIS (0.82) and DASH (0.81) assessments. No floor or ceiling effects were found.ConclusionThe Dutch version of WOSI showed good reliability and validity in a cohort of patients with shoulder instability, although the factor structure remains unclear.

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“…Relevant settings (shoulder instability; aims and analysis [references]) for the WOSI are as follows: Various reasons for instability (development, reliability, validity, responsiveness [67]) Randomized controlled trial: rehabilitation, surgery (revision of scaling, outcome [91]) Shoulder instruments (comparative review [93, 94]) Physiotherapy, surgery (German WOSI: reliability, validity, responsiveness [92, 95]) Stabilization surgery (Swedish WOSI: reliability, validity, responsiveness [96]) …”

Section: Western Ontario Shoulder Instability Index (Wosi)mentioning

confidence: 99%

“…Published in (67, 91, 92, 95, 96). Free online at http://www.secec.org/data/upload/files/Western%20Ontario%20Shoulder%20Instability%20Index%20(WOSI).pdf.…”

Section: Western Ontario Shoulder Instability Index (Wosi)mentioning

confidence: 99%

Measures of adult shoulder function: Disabilities of the Arm, Shoulder, and Hand Questionnaire (DASH) and Its Short Version (QuickDASH), Shoulder Pain and Disability Index (SPADI), American Shoulder and Elbow Surgeons (ASES) Society Standardized Shoulder Assessment Form, Constant (Murley) Score (CS), Simple Shoulder Test (SST), Oxford Shoulder Score (OSS), Shoulder Disability Questionnaire (SDQ), and Western Ontario Shoulder Instability Index (WOSI)

Angst

Schwyzer

Aeschlimann

et al. 2011

Arthritis Care & Research

510

374

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Cross-cultural adaptation and validation of the German version of the Western Ontario shoulder instability index

Abstract: The German translation of the WOSI is a valid and reliable tool, applicable to outcome studies on patients with shoulder instability.

Cited by 42 publications

References 40 publications

Evaluation of Oxford instability shoulder score, Western Ontario shoulder instability Index and Euroqol in patients with slap (superior labral anterior posterior) lesions or recurrent anterior dislocations of the shoulder

Evaluation of Oxford instability shoulder score, Western Ontario shoulder instability Index and Euroqol in patients with slap (superior labral anterior posterior) lesions or recurrent anterior dislocations of the shoulder

Measurement properties of the Western Ontario Shoulder Instability Index in Dutch patients with shoulder instability

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