Reliability and validity of the Western Ontario Shoulder Instability Index (WOSI) in the Japanese population

Hatta, Taku; Shinozaki, Nobuhisa; Omi, Rei; Sano, Hirotaka; Yamamoto, Nobuyuki; Andõ, Akira; Sugaya, Hiroyuki; Aizawa, Tadanori; Kuriyama, Shinichi

doi:10.1007/s00776-011-0141-4

Cited by 32 publications

(30 citation statements)

References 18 publications

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“…Our study is most similar to those performed by Kirkley et al and Hatta et al [7,13] regarding both the length of the test–retest interval (both 2 weeks) and the size of the patient population (51 and 59 patients, respectively). These studies reported ICCs of 0.94 and 0.91, respectively, for the WOSI total score.…”

Section: Discussionsupporting

confidence: 88%

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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Section: Discussionsupporting

confidence: 88%

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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“…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%

“…For the WOSI, it was in accordance with the original version and later published versions [2,37,38], and for EQ-VAS it was slightly higher than that of the original version [12]. In contrast to previous studies the reliability of EQ-5D was not acceptable in the present study [12,41].…”

Section: Discussionsupporting

confidence: 82%

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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“…It has been thoroughly evaluated for reliability, validity, and sensitivity for change, both pre- and post-operatively [12, 16–18]. The WOSI has been translated and culturally adapted into several languages [19–23].…”

Section: Introductionmentioning

confidence: 99%

Translation and validation of a Hebrew version of the Western Ontario Shoulder Instability index

Gottlieb

Springer

2019

J Orthop Surg Res

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Background The Western Ontario Shoulder Instability index (WOSI) is a questionnaire designed to measure health-related quality of life in patients with shoulder instability. The aim of the current study was to translate the WOSI into Hebrew and assess its psychometric properties. Methods The WOSI was translated into Hebrew according to World Health Organization guidelines. Twenty-five patients completed the WOSI and the Disabilities of Arm, Shoulder, and Hand (DASH) questionnaire 2 weeks and 2 months after surgical shoulder stabilization. Internal consistency (Cronbach’s α), criterion validity (Pearson’s correlation coefficient with DASH), responsiveness, and floor and ceiling effects were assessed. Results Cronbach’s α was 0.88–0.95 for total WOSI (range 0.68–0.95 for different sections). Strong correlation with DASH score ( r = 0.76–0.84) indicated good criterion validity. Changes between baseline and follow-up for WOSI and DASH scores were moderately correlated ( r = 0.68), suggesting moderate responsiveness. Some items demonstrated floor and ceiling effects, especially at baseline, but no floor or ceiling effects were observed for total WOSI or for the WOSI sections. Conclusions The results of the current study demonstrate that the Hebrew version of the WOSI is a valid instrument that can be used to assess disability in patients with shoulder instability. Additional studies are warranted to assess its psychometric properties among various subpopulations. Trial registration The study was pre-registered at the ClinicalTrials.gov website, registration number NCT02978365 .

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Reliability and validity of the Western Ontario Shoulder Instability Index (WOSI) in the Japanese population

Cited by 32 publications

References 18 publications

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

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

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

Translation and validation of a Hebrew version of the Western Ontario Shoulder Instability index

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