The Western Ontario rotator cuff index in rotator cuff disease patients: a comprehensive reliability and responsiveness validation study

The American Journal of Sports Medicine
P B de WitteR G H H Nelissen

Abstract

The Western Ontario rotator cuff index (WORC) is an increasingly applied condition-specific outcome measure for rotator cuff (RC) conditions. However, in most WORC validation studies, only a limited number of psychometric properties are studied in indistinct patient groups. To assess psychometric properties of the WORC according to the Scientific Advisory Committee quality criteria for health questionnaires in 3 patient groups with distinct RC conditions. Cohort study (diagnosis); Level of evidence, 2. The WORC (range, 0-100; 21 items, 5 domains) was administered twice (T1, T2) in 92 patients (35 RC tears, 35 calcific tendinitis, 22 impingement). Additionally, the Constant score (CS) and the Disabilities of the Arm, Shoulder and Hand score (DASH) were recorded. Calcific tendinitis patients were reassessed 6 weeks after treatment with needling and lavage or a subacromial injection with corticosteroids (T3). We assessed floor and ceiling effects, internal consistency, test-retest reliability, precision, construct validity, minimally detectable change, and responsiveness in the diagnostic subgroups and the total group. Mean age was 55.0 ± 8.7 years, and 49 of 92 (53%) patients were female. Mean baseline WORC was 46.8 ± 20.4, CS wa...Continue Reading

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Jul 9, 2013·Medical & Biological Engineering & Computing·P B de WitteJ H de Groot
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Methods Mentioned

BETA
lavage

Software Mentioned

SPSS

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