title: Cross-cultural adaptation, reliability and validity of the Patient Rated Elbow Evaluation (PREE) for German-speaking patients.
abstract: OBJECTIVE
  Patient-orientated questionnaires are important instruments for the assessment of outcome in the clinical environment and in musculoskeletal research. The objective of this study was to cross-culturally adapt the Patient Rated Elbow Evaluation (PREE) into German (PREE-G) and to test its reliability, validity and psychometric properties.
  
  
  METHODS
  The PREE was cross-culturally adapted for the German language, according to established guidelines. Fifty-six patients who had undergone elbow arthroplasty for osteoarthritis or chronic polyarthritis, on average 11 years previously, were assessed using the PREE-G, the Short Form 36 (SF-36), the Disabilities of Arm, Shoulder, Hand (DASH) and the modified American Shoulder and Elbow Surgeons (mASES) clinical evaluation.
  
  
  RESULTS
  The test-retest reliability (intraclass correlation coefficient) of the PREE-G was 0.80, and the internal consistency 0.96. The PREE-G correlated with the DASH (r = 0.73) and the physical component summary of the SF-36 (r = 0.57) but not with the mental component summary (r = -0.02). The PREE-G correlated moderately with certain clinical findings (mASES) (r = 0.36-0.54; p < 0.01).
  
  
  CONCLUSIONS
  The PREE-G represents a reliable and valid instrument to evaluate subjective outcome in German speaking patients with elbow pathology.
authors.affiliation: Department of Orthopaedics, Otto-von-Guericke University, Magdeburg, Germany. michajohn100@web.de
authors.forename: M
authors.initials: M
authors.lastname: John
authors.forename: F
authors.initials: F
authors.lastname: Angst
authors.forename: G
authors.initials: G
authors.lastname: Pap
authors.forename: A
authors.initials: A
authors.lastname: Junge
authors.forename: A F
authors.initials: AF
authors.lastname: Mannion
mesh_terms: D001168:Arthritis / Q000503:physiopathology / Q000523:psychology; D002908:Chronic Disease; D003431:Cross-Cultural Comparison; D004185:Disability Evaluation; D004551:Elbow Joint / Q000473:pathology* / Q000503:physiopathology; D005858:Germany; D017408:Guidelines as Topic; D006801:Humans; D007802:Language; D010003:Osteoarthritis / Q000503:physiopathology* / Q000523:psychology*; D017063:Outcome Assessment, Health Care; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires