title: Reliability and validity of adapted French Canadian version of Scoliosis Research Society Outcomes Questionnaire (SRS-22) in Quebec.
abstract: METHODS
  Prospective validation study of a cross-cultural adaptation of the Scoliosis Research Society (SRS) Outcomes Questionnaire.
  
  
  OBJECTIVE
  To provide a French Canadian version of the SRS Outcomes Questionnaire and to empirically test its response in healthy adolescents and adolescent idiopathic scoliosis (AIS) patients in Québec.
  
  
  BACKGROUND
  The SRS Outcomes Questionnaire is widely used for the assessment of health-related quality of life in AIS patients.
  
  
  METHODS
  French translation and back-translation of the SRS-22 (SRS-22-fv) were done by an expert committee. Its reliability was measured using the coefficient of internal consistency, construct validity with a factorial analysis, concurrent validity by using the short form-12 and discriminant validity using ANOVA and multivariate linear regression, on 145 AIS patients, 44 patients with non clinically significant scoliosis (NCSS), and 64 healthy patients.
  
  
  RESULTS
  The SRS-22-fv showed a good global internal consistency (AIS: Cronbach alpha = 0.86, NCSS: 0.81, and controls: 0.79) and in all of its domains for AIS patients. The factorial structure was coherent with the original questionnaire (47.4% of explained variance). High correlation coefficients were obtained between SRS-22-fv and short form-12 corresponding domains. Boys had higher scores than girls, scores worsened with age, and with increasing body mass index. Mean Total, Pain, Self-image, and Satisfaction scores, were correlated with Cobb angle. Adjusted regression models showed statistically significant differences between the AIS, NCSS, and control groups in the Total, Pain, and Function scores.
  
  
  CONCLUSIONS
  The SRS-22-fv showed satisfactory reliability, factorial, concurrent, and discriminant validity. This study provides scores in a significant group of healthy adolescents and demonstrates a clear gradient in response between subjects with AIS, NCSS, and controls.
authors.affiliation: Research Center, Sainte-Justine University Hospital Center, Montréal, Québec, Canada.
authors.forename: Marie
authors.initials: M
authors.lastname: Beauséjour
authors.forename: Julie
authors.initials: J
authors.lastname: Joncas
authors.forename: Lise
authors.initials: L
authors.lastname: Goulet
authors.forename: Marjolaine
authors.initials: M
authors.lastname: Roy-Beaudry
authors.forename: Stefan
authors.initials: S
authors.lastname: Parent
authors.forename: Guy
authors.initials: G
authors.lastname: Grimard
authors.forename: Martin
authors.initials: M
authors.lastname: Forcier
authors.forename: Sophie
authors.initials: S
authors.lastname: Lauriault
authors.forename: Hubert
authors.initials: H
authors.lastname: Labelle
mesh_terms: D000293:Adolescent; D001828:Body Image; D002648:Child; D003469:Culture; D005260:Female; D006801:Humans; D008297:Male; D000297:Psychology, Adolescent; D011788:Quality of Life; D011792:Quebec; D015203:Reproducibility of Results; D012600:Scoliosis / Q000523:psychology*; D011795:Surveys and Questionnaires / Q000592:standards*; D055815:Young Adult