Journal article
Development and Validation of a Short-Form Version of the Western Ontario Shoulder Instability Scale (Short-WOSI)
The American journal of sports medicine, Vol.51(11), pp.2850-2857
09/2023
DOI: 10.1177/03635465231188975
PMID: 37584514
Abstract
Background: Patient-reported outcome measures (PROMs) have transitioned from primarily being used as research instruments to becoming increasingly used in the clinical setting to assess recovery and inform shared decision-making. However, there is a need to develop validated short-form PROM instruments to decrease patient burden and ease incorporation into clinical practice.
Purpose: To assess the validity and responsiveness of a shortened version of the Western Ontario Shoulder Instability Index (Short-WOSI) when compared with the full WOSI and other shoulder-related PROM instruments.
Study design: Cohort study (diagnosis); Level of evidence, 2.
Methods: This study was a secondary analysis of data collected as part of an institutional review board-approved, multicenter cohort of 1160 patients undergoing surgical stabilization for shoulder instability. The following PROMs were captured preoperatively and 2 years after surgery: WOSI, American Shoulder and Elbow Surgeons (ASES) score, the Single Assessment Numeric Evaluation (SANE), and 36-Item Health Survey (RAND-36). The cohort was split into 2 data sets: a training set to be used in the development of the Short-WOSI (n = 580) and a test set to be used to assess the validity and responsiveness of the Short-WOSI relative to the full WOSI, ASES, SANE, and RAND-36.
Results: The Short-WOSI demonstrated excellent internal consistency before surgery (Cronbach α = .83) and excellent internal consistency at the 2-year follow-up (Cronbach α = .93). The baseline, 2-year, and pre- to postoperative changes in Short-WOSI and WOSI were closely correlated (r > 0.90), with both demonstrating large effect sizes (Short-WOSI = 1.92, WOSI = 1.81). Neither the Short-WOSI nor the WOSI correlated well with the other PROM instruments before (r = 0.21-0.33) or after (r = 0.25-0.38) surgery. The Short-WOSI, WOSI, and SANE scores were more responsive than ASES and RAND-36 scores.
Conclusion: The 7-item Short-WOSI demonstrated excellent internal consistency and a lack of floor or ceiling effects. The Short-WOSI demonstrated excellent cross-sectional and longitudinal construct validity and was similarly responsive over time as the full WOSI. Neither the Short-WOSI nor WOSI correlated with more general shoulder PROMs, underscoring the advantage of using instability-specific instruments for this population.
Details
- Title: Subtitle
- Development and Validation of a Short-Form Version of the Western Ontario Shoulder Instability Scale (Short-WOSI)
- Creators
- Cale A JacobsShannon F OrtizKeith M BaumgartenJulie Y BishopMatthew J BollierJonathan T BravmanRobert H BrophyGregory L CvetanovichBrian T FeeleyRachel M FrankGrant L JonesJohn E KuhnDrew A LansdownC Benjamin MaScott D MairRobert G MarxEric C McCartyAdam J SeidlRick W WrightAlan L ZhangBrian R WolfCarolyn M Hettrich
- Resource Type
- Journal article
- Publication Details
- The American journal of sports medicine, Vol.51(11), pp.2850-2857
- DOI
- 10.1177/03635465231188975
- PMID
- 37584514
- ISSN
- 0363-5465
- eISSN
- 1552-3365
- Grant note
- DOI: 10.13039/100006108, name: national center for advancing translational sciences, award: U54TR001356; DOI: 10.13039/100001279, name: Orthopaedic Research and Education Foundation
- Language
- English
- Electronic publication date
- 08/16/2023
- Date published
- 09/2023
- Academic Unit
- Orthopedics and Rehabilitation; Physical Therapy and Rehabilitation Science
- Record Identifier
- 9984455655802771
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