title: The Responsiveness of the Modified Childhood Health Assessment Questionnaire.
abstract: To determine the ability of the revised version of the Childhood Health Assessment Questionnaire (CHAQ), the VASCHAQ, to detect clinical change over time in pediatric patients with juvenile idiopathic arthritis (JIA). We studied the relative responsiveness of the VASCHAQas compared to the original CHAQ-30 and revised CHAQ-38, as well as the parent-patient, physician-patient, and physician-parent concordance.
  
  
  
  The CHAQ-38 and VASCHAQwere administered to 30 parents and patients (if older than 8 years) with any subtype of JIA before and after the start of a new treatment. The standardized response means (SRM) were calculated for the VASCHAQ, the original CHAQ-30, and the CHAQ-38. Comparisons of SRM were made using the relative SRM. Parent-patient, physician-patient, and physician-parent concordances were assessed by calculating a series of intraclass correlation coefficients.
  
  
  
  Twenty-seven parents and 21 patients completed questionnaires at both visits. All questionnaires demonstrated large responsiveness; however, the VASCHAQwas found to be about 25% more responsive than both the original CHAQ-30 and CHAQ-38.
  
  
  
  The VASCHAQwas moderately more responsive than the CHAQ-30 and CHAQ-38 in both parent and patient groups and should be considered for use in studies evaluating change in function over time.
authors.affiliation: From the Child Health Evaluative Sciences, and the Division of Rheumatology, The Hospital for Sick Children; Communicable Disease Surveillance Unit, Communicable Disease Control, Toronto Public Health; Department of Medical Imaging, University of Toronto, Diagnostic Radiology residency program; Department of Pediatrics, Faculty of Medicine, and the Institute of Health Policy Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada; School of Medicine and Medical Sciences, University College Dublin, Dublin, Ireland.S. Peters, BS, School of Medicine and Medical Sciences, University College Dublin; S. Ota, MHSc, Communicable Disease Surveillance Unit, Communicable Disease Control, Toronto Public Health; E. Bolous, MD, Department of Medical Imaging, University of Toronto, Diagnostic Radiology residency program; E. Reich, MD, CCFP, Child Health Evaluative Sciences, The Hospital for Sick Children; S. Chait, HBMSc, Child Health Evaluative Sciences, The Hospital for Sick Children; B.M. Feldman, MD, MSc, FRCPC, Professor, Department of Pediatrics, Faculty of Medicine and the Institute of Health Policy Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, and Child Health Evaluative Sciences, Division of Rheumatology, The Hospital for Sick Children.
authors.forename: Shannon
authors.initials: S
authors.lastname: Peters
authors.affiliation: From the Child Health Evaluative Sciences, and the Division of Rheumatology, The Hospital for Sick Children; Communicable Disease Surveillance Unit, Communicable Disease Control, Toronto Public Health; Department of Medical Imaging, University of Toronto, Diagnostic Radiology residency program; Department of Pediatrics, Faculty of Medicine, and the Institute of Health Policy Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada; School of Medicine and Medical Sciences, University College Dublin, Dublin, Ireland.S. Peters, BS, School of Medicine and Medical Sciences, University College Dublin; S. Ota, MHSc, Communicable Disease Surveillance Unit, Communicable Disease Control, Toronto Public Health; E. Bolous, MD, Department of Medical Imaging, University of Toronto, Diagnostic Radiology residency program; E. Reich, MD, CCFP, Child Health Evaluative Sciences, The Hospital for Sick Children; S. Chait, HBMSc, Child Health Evaluative Sciences, The Hospital for Sick Children; B.M. Feldman, MD, MSc, FRCPC, Professor, Department of Pediatrics, Faculty of Medicine and the Institute of Health Policy Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, and Child Health Evaluative Sciences, Division of Rheumatology, The Hospital for Sick Children.
authors.forename: Sylvia
authors.initials: S
authors.lastname: Ota
authors.affiliation: From the Child Health Evaluative Sciences, and the Division of Rheumatology, The Hospital for Sick Children; Communicable Disease Surveillance Unit, Communicable Disease Control, Toronto Public Health; Department of Medical Imaging, University of Toronto, Diagnostic Radiology residency program; Department of Pediatrics, Faculty of Medicine, and the Institute of Health Policy Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada; School of Medicine and Medical Sciences, University College Dublin, Dublin, Ireland.S. Peters, BS, School of Medicine and Medical Sciences, University College Dublin; S. Ota, MHSc, Communicable Disease Surveillance Unit, Communicable Disease Control, Toronto Public Health; E. Bolous, MD, Department of Medical Imaging, University of Toronto, Diagnostic Radiology residency program; E. Reich, MD, CCFP, Child Health Evaluative Sciences, The Hospital for Sick Children; S. Chait, HBMSc, Child Health Evaluative Sciences, The Hospital for Sick Children; B.M. Feldman, MD, MSc, FRCPC, Professor, Department of Pediatrics, Faculty of Medicine and the Institute of Health Policy Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, and Child Health Evaluative Sciences, Division of Rheumatology, The Hospital for Sick Children.
authors.forename: Emily
authors.initials: E
authors.lastname: Bolous
authors.affiliation: From the Child Health Evaluative Sciences, and the Division of Rheumatology, The Hospital for Sick Children; Communicable Disease Surveillance Unit, Communicable Disease Control, Toronto Public Health; Department of Medical Imaging, University of Toronto, Diagnostic Radiology residency program; Department of Pediatrics, Faculty of Medicine, and the Institute of Health Policy Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada; School of Medicine and Medical Sciences, University College Dublin, Dublin, Ireland.S. Peters, BS, School of Medicine and Medical Sciences, University College Dublin; S. Ota, MHSc, Communicable Disease Surveillance Unit, Communicable Disease Control, Toronto Public Health; E. Bolous, MD, Department of Medical Imaging, University of Toronto, Diagnostic Radiology residency program; E. Reich, MD, CCFP, Child Health Evaluative Sciences, The Hospital for Sick Children; S. Chait, HBMSc, Child Health Evaluative Sciences, The Hospital for Sick Children; B.M. Feldman, MD, MSc, FRCPC, Professor, Department of Pediatrics, Faculty of Medicine and the Institute of Health Policy Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, and Child Health Evaluative Sciences, Division of Rheumatology, The Hospital for Sick Children.
authors.forename: Erin
authors.initials: E
authors.lastname: Reich
authors.affiliation: From the Child Health Evaluative Sciences, and the Division of Rheumatology, The Hospital for Sick Children; Communicable Disease Surveillance Unit, Communicable Disease Control, Toronto Public Health; Department of Medical Imaging, University of Toronto, Diagnostic Radiology residency program; Department of Pediatrics, Faculty of Medicine, and the Institute of Health Policy Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada; School of Medicine and Medical Sciences, University College Dublin, Dublin, Ireland.S. Peters, BS, School of Medicine and Medical Sciences, University College Dublin; S. Ota, MHSc, Communicable Disease Surveillance Unit, Communicable Disease Control, Toronto Public Health; E. Bolous, MD, Department of Medical Imaging, University of Toronto, Diagnostic Radiology residency program; E. Reich, MD, CCFP, Child Health Evaluative Sciences, The Hospital for Sick Children; S. Chait, HBMSc, Child Health Evaluative Sciences, The Hospital for Sick Children; B.M. Feldman, MD, MSc, FRCPC, Professor, Department of Pediatrics, Faculty of Medicine and the Institute of Health Policy Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, and Child Health Evaluative Sciences, Division of Rheumatology, The Hospital for Sick Children.
authors.forename: Samantha
authors.initials: S
authors.lastname: Chait
authors.affiliation: From the Child Health Evaluative Sciences, and the Division of Rheumatology, The Hospital for Sick Children; Communicable Disease Surveillance Unit, Communicable Disease Control, Toronto Public Health; Department of Medical Imaging, University of Toronto, Diagnostic Radiology residency program; Department of Pediatrics, Faculty of Medicine, and the Institute of Health Policy Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada; School of Medicine and Medical Sciences, University College Dublin, Dublin, Ireland.S. Peters, BS, School of Medicine and Medical Sciences, University College Dublin; S. Ota, MHSc, Communicable Disease Surveillance Unit, Communicable Disease Control, Toronto Public Health; E. Bolous, MD, Department of Medical Imaging, University of Toronto, Diagnostic Radiology residency program; E. Reich, MD, CCFP, Child Health Evaluative Sciences, The Hospital for Sick Children; S. Chait, HBMSc, Child Health Evaluative Sciences, The Hospital for Sick Children; B.M. Feldman, MD, MSc, FRCPC, Professor, Department of Pediatrics, Faculty of Medicine and the Institute of Health Policy Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, and Child Health Evaluative Sciences, Division of Rheumatology, The Hospital for Sick Children. brian.feldman@sickkids.ca.
authors.forename: Brian M
authors.initials: BM
authors.lastname: Feldman
mesh_terms: D000293:Adolescent; D001171:Arthritis, Juvenile / Q000175:diagnosis*; D002648:Child; D002675:Child, Preschool; D004185:Disability Evaluation; D018450:Disease Progression; D005260:Female; D006304:Health Status; D006801:Humans; D008297:Male; D010808:Physical Examination; D011788:Quality of Life; D011795:Surveys and Questionnaires; D063189:Symptom Assessment; D055815:Young Adult
keywords: HEALTH STATUS; JUVENILE IDIOPATHIC ARTHRITIS; OUTCOME ASSESSMENT; SELF-ASSESSMENT