title: Measurement properties of the Western Ontario rotator cuff outcome measure: a preliminary report.
abstract: The purpose of this prospective repeated-measures outcomes study was to investigate the construct validity and sensitivity to change of a newly developed outcome measure, the Western Ontario Rotator Cuff Index (WORC) in a population of patients seen at a tertiary shoulder center. A total of 154 subjects (66 women and 88 men; mean age, 48 years [SD, 14.80 years]) agreed to participate in the study. Of these, 50 patients (16 women and 34 men; mean age, 50 years [SD, 14.36 years]) met the criteria for surgery. The Pearson correlation coefficients between the initial scores and the change scores at 6 months postoperatively of the WORC, Constant-Murley shoulder form, and American Shoulder and Elbow Surgeons standardized shoulder assessment form were high (P < .01). The WORC was sensitive to detect change: F = 28.041 and P < .000 at 3 months and F = 66.927 and P < .000 at 6 months postoperatively. The results of this study support the validity of the WORC for use in patients with rotator cuff pathology.
authors.affiliation: University of Toronto, Orthopaedic and Arthritic Institute, Sunnybrook & Women's College Health Sciences Centre, Toronto, Ontario, Canada. richard.holtby@sw.ca
authors.forename: Richard
authors.initials: R
authors.lastname: Holtby
authors.forename: Helen
authors.initials: H
authors.lastname: Razmjou
mesh_terms: D005260:Female; D006801:Humans; D007592:Joint Diseases / Q000175:diagnosis / Q000601:surgery; D008297:Male; D008875:Middle Aged; D017063:Outcome Assessment, Health Care; D011446:Prospective Studies; D017006:Rotator Cuff / Q000601:surgery; D000070636:Rotator Cuff Injuries