title: Cross-cultural adaption and measurement properties of the Danish version of the Shoulder Pain and Disability Index.
abstract: OBJECTIVE
  To cross-culturally adapt the Danish version of the Shoulder Pain and Disability Index and to evaluate its measurement properties in terms of reliability and known-group validity.
  
  
  METHODS
  Test-retest study.
  
  
  METHODS
  Outpatient Clinic of the Department of Orthopaedic Surgery, Regional Hospital Herning, Denmark.
  
  
  METHODS
  Consecutive shoulder patients referred to an outpatient clinic.
  
  
  METHODS
  The Shoulder Pain and Disability Index was translated from English into Danish according to international guidelines. The questionnaire was posted to patients one to two weeks before their scheduled clinical examination and repeated on the day of the examination.
  
  
  RESULTS
  A total of 65 patients with a variety of shoulder diagnoses were included in the study. No significant differences were found in scores between the first and the second questionnaire. The minimal detectable change was estimated to 19.4 points, and the intraclass correlation coefficient was 0.88 (95% confidence interval 0.83 to 0.94). Internal consistency measured by Cronbach's alpha was 0.94. The questionnaire was found to discriminate well between currently working and non-working patients.
  
  
  CONCLUSIONS
  The Shoulder Pain and Disability Index provides a sensitive and reliable tool to assess pain and disability in Danish-speaking orthopaedic shoulder patients.
authors.affiliation: Danish Ramazzini Centre, Department of Occupational Medicine, Regional Hospital Herning, Denmark. david.christiansen@vest.rm.dk
authors.forename: David H
authors.initials: DH
authors.lastname: Christiansen
authors.forename: Johan H
authors.initials: JH
authors.lastname: Andersen
authors.forename: Jens Peder
authors.initials: JP
authors.lastname: Haahr
mesh_terms: D003718:Denmark; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010044:Outpatient Clinics, Hospital; D010147:Pain Measurement / Q000379:methods*; D015203:Reproducibility of Results; D020069:Shoulder Pain / Q000175:diagnosis*; D011795:Surveys and Questionnaires; D014177:Translations