title: Reliability and Validity Study of the Finnish Adaptation of Scoliosis Research Society Questionnaire Version SRS-30.
abstract: METHODS
  A prospective clinical study to test and adapt a Finnish version of the Scoliosis Research Society 30 (SRS-30) questionnaire.
  
  
  OBJECTIVE
  The aim of this study was to perform cross-cultural adaptation and evaluate the validity of the adapted Finnish version of the SRS-30 questionnaire.
  
  
  BACKGROUND
  The SRS-30 questionnaire has proved to be a valid instrument in evaluating health-related quality of life (HRQoL) in adolescent and adult population with spine deformities in the United States. Multinational availability requires cross-cultural and linguistic adaptation and validation of the instrument.
  
  
  METHODS
  The SRS-30 was translated into Finnish using accepted methods for translation of quality-of-life questionnaires. A total of 274 adult patients with degenerative radiographic sagittal spinal disorder answered the questionnaire with sociodemographic data, RAND 36-item health survey questionnaire (RAND Corp. Health, Santa Monica, CA, US), Oswestry disability index, DEPS depression scale, and Visual Analog Scale (VAS) back and leg pain scales within 2 weeks' interval. The cohort included patients with and without previous spine surgery. Internal consistency and validity were tested with Cronbach α, intraclass correlation (ICC), standard error of measurement, and Spearman correlation coefficient with 95% confidence intervals (CIs).
  
  
  RESULTS
  The internal consistency of SRS-30 was good in both surgery and nonsurgery groups, with Cronbach α 0.853 (95% CI, 0.670 to 0.960) and 0.885 (95% CI, 0.854 to 0.911), respectively. The test-retest reproducibility ICC of the SRS-30 total and subscore domains of patients with stable symptoms was 0.905 (95% CI, 0.870-0.930) and 0.904 (95% CI, 0.871-0.929), respectively. The questionnaire had discriminative validity in the pain, self-image, and satisfaction with management domains compared with other questionnaires.
  
  
  CONCLUSIONS
  The SRS-30 questionnaire proved to be valid and applicable in evaluating HRQoL in Finnish adult spinal deformity patients. It has two domains related to deformity that are not covered by other generally used questionnaires.
  
  
  METHODS
  3.
authors.affiliation: Department of Orthopaedics and Traumatology, Central Hospital of Central Finland, Jyväskylä, Finland.
authors.forename: Kati
authors.initials: K
authors.lastname: Kyrölä
authors.affiliation: Department of Physical Medicine and Rehabilitation, Central Hospital of Central Finland, Jyväskylä, Finland.
authors.forename: Salme
authors.initials: S
authors.lastname: Järvenpää
authors.affiliation: Department of Physical Medicine and Rehabilitation, Central Hospital of Central Finland, Jyväskylä, Finland.
authors.forename: Jari
authors.initials: J
authors.lastname: Ylinen
authors.affiliation: Department of Education and Science, Central Finland Health Care District, Jyväskylä, Finland.|University of Eastern Finland, Jyväskylä, Finland.
authors.forename: Jukka-Pekka
authors.initials: JP
authors.lastname: Mecklin
authors.affiliation: Department of Orthopaedics and Traumatology, Central Hospital of Central Finland, Jyväskylä, Finland.
authors.forename: Jussi Petteri
authors.initials: JP
authors.lastname: Repo
authors.affiliation: Department of Physical Medicine and Rehabilitation, Central Hospital of Central Finland, Jyväskylä, Finland.|Department of Health Sciences, University of Jyväskylä, Jyväskylä, Finland.
authors.forename: Arja
authors.initials: A
authors.lastname: Häkkinen
mesh_terms: D000368:Aged; D003431:Cross-Cultural Comparison; D005260:Female; D005387:Finland; D006305:Health Status Indicators; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D012600:Scoliosis; D013122:Spinal Diseases; D011795:Surveys and Questionnaires; D014175:Translating