{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,16]],"date-time":"2026-05-16T20:54:01Z","timestamp":1778964841977,"version":"3.51.4"},"reference-count":63,"publisher":"Journal of Orthopaedic & Sports Physical Therapy (JOSPT)","issue":"5","content-domain":{"domain":["www.jospt.org"],"crossmark-restriction":true},"short-container-title":["Journal of Orthopaedic &amp; Sports Physical Therapy"],"published-print":{"date-parts":[[2018,5]]},"abstract":"<jats:sec><jats:title>Study Design<\/jats:title><jats:p> Clinical measurement. <\/jats:p><\/jats:sec><jats:sec><jats:title>Background<\/jats:title><jats:p> Recently, the Western Ontario Rotator Cuff Index (WORC) was shortened, but few studies have reported its measurement properties. <\/jats:p><\/jats:sec><jats:sec><jats:title>Objective<\/jats:title><jats:p> To compare the validity and responsiveness of the short version of the Western Ontario Rotator Cuff Index (Short-WORC) and the WORC (disease-specific measures) with those of the Shoulder Pain and Disability Index (SPADI) and the simple shoulder test (SST) (joint-specific measures); the Disabilities of the Arm, Shoulder and Hand (DASH) (a region-specific measure); and the Medical Outcomes Study 12-Item Short-Form Health Survey version 2 (SF-12v2) (a general health status measure) in patients undergoing rotator cuff repair (RCR). <\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p> A cohort of patients (n = 223) completed the WORC, SPADI, SST, DASH, and SF-12v2 preoperatively and at 3 and 6 months after RCR. Short-WORC scores were extracted from the WORC questionnaire. The construct validity (Pearson correlations) and internal responsiveness (effect size [ES], standardized response mean [SRM], relative efficiency [RE]) of the Short-WORC were calculated. <\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p> The Short-WORC was strongly correlated with the WORC (r = 0.89\u22120.96) and moderately to strongly correlated with non-disease-specific measures at preoperative and postoperative assessments (r = 0.51\u22120.92). The Short-WORC and WORC were equally responsive (RE<jats:sub>Short-WORC\/WORC<\/jats:sub> = 1) at 0 to 6 months and highly responsive overall at 0 to 3 months (ES<jats:sub>Short-WORC<\/jats:sub>, 0.72; ES<jats:sub>WORC<\/jats:sub>, 0.92; SRM<jats:sub>Short-WORC<\/jats:sub>, 0.75; SRM<jats:sub>WORC<\/jats:sub>, 0.81) and 0 to 6 months (ES<jats:sub>Short-WORC<\/jats:sub>, 1.05; ES<jats:sub>WORC<\/jats:sub>, 1.12; SRM<jats:sub>Short-WORC<\/jats:sub>, 0.89; SRM<jats:sub>WORC<\/jats:sub>, 0.89). The responsiveness of the comparator measures (SPADI, SST, DASH, SF-12v2) was poor to moderate at 0 to 3 months (ES, 0.07\u22120.55; SRM, 0.09\u22120.49) and 0 to 6 months (ES, 0.05\u22120.78; SRM, 0.07\u22120.78). <\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p> The Short-WORC and WORC have similar responsiveness in patients undergoing RCR, and are more responsive than non-disease-specific measures. Future studies should focus on validation of the Short-WORC in samples representing the spectrum of rotator cuff disorders. 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