title: The reliability and concurrent validity of the Scoliosis Research Society-22r patient questionnaire compared with the Child Health Questionnaire-CF87 patient questionnaire for adolescent spinal deformity.
abstract: METHODS
  This is a clinic-based cross-sectional study involving 2 health-related quality-of-life (HRQL) questionnaires.
  
  
  OBJECTIVE
  To compare the score distribution and reliability of the spinal deformity specific Scoliosis Research Society-22r (SRS-22r) questionnaire and the established generic Child Health Questionnaire-CF87 (CHQ-CF87), and to assess the concurrent validity of the SRS-22r using the CHQ-CF87 in an adolescent spine deformity population.
  
  
  BACKGROUND
  Different questionnaires are commonly thought to be necessary to assess the HRQL of adolescent and adult populations. But since spinal deformities usually begin in the second decade of life, longitudinal follow-up with the same HRQL is desirable. The SRS-22r HRQL has recently been validated for score distribution and internal consistency in a spinal deformity population ranging in age from 7 to 78 years.
  
  
  METHODS
  The SRS-22r and CHQ-CF87 HRQLs were completed by 70 orthopedic spinal deformity outpatients 8 to 18 years of age, of whom 54 returned mailed retest questionnaires at an average of 24 days later.
  
  
  RESULTS
  The ceiling effect averaged 27% for the SRS-22r and 36% for the CHQ-CF87. Respective values for internal consistency (Cronbach alpha) were 0.81 and 0.82, and for test-retest reproducibility the intraclass correlations (ICC) were 0.73 and 0.61. Concurrent validity was r > or = 0.68 or more for relevant function, pain, and mental health domains. The SRS Self-Image and particularly the Satisfaction/Dissatisfaction with Management domains did not correlate well with any CHQ-CF87 domains (r = 0.50 and 0.30, respectively).
  
  
  CONCLUSIONS
  In a spinal deformity population 8 to 18 years of age, the score distribution and reliability, internal consistency, and reproducibility of the SRS-22r were at least as good as the CHQ-CF87. The SRS-22r function, pain, and mental health domains were concurrently valid in comparison to relevant CHQ-CF87 domains, but the SRS-22r self-image and satisfaction/dissatisfaction domains were not, thereby providing health-related quality-of-life information not provided for by the CHQ-CF87.
authors.affiliation: Department of Orthopedic Surgery, University of Kansas Medical Center, Kansas City, KS 66160, USA. cglattes@kumc.edu
authors.forename: R Christopher
authors.initials: RC
authors.lastname: Glattes
authors.forename: Douglas C
authors.initials: DC
authors.lastname: Burton
authors.forename: Sue Min
authors.initials: SM
authors.lastname: Lai
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Frasier
authors.forename: Marc A
authors.initials: MA
authors.lastname: Asher
mesh_terms: D000203:Activities of Daily Living / Q000523:psychology; D000293:Adolescent; D000367:Age Factors; D000375:Aging / Q000523:psychology; D001416:Back Pain / Q000453:epidemiology / Q000523:psychology; D001828:Body Image; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000453:epidemiology / Q000523:psychology; D008603:Mental Health / Q000706:statistics & numerical data*; D017060:Patient Satisfaction; D011237:Predictive Value of Tests; D011594:Psychometrics / Q000295:instrumentation*; D011788:Quality of Life / Q000523:psychology*; D012600:Scoliosis / Q000503:physiopathology / Q000523:psychology*; D013223:Statistics as Topic; D011795:Surveys and Questionnaires / Q000592:standards*