title: Validation of the French version of the Childhood Health Assessment Questionnaire (CHAQ) in juvenile idiopathic arthritis.
abstract: OBJECTIVE
  To translate, cross-culturally adapt, and validate the functional disability tool Childhood Health Assessment Questionnaire (CHAQ), a variant of the Health Assessment Questionnaire (HAQ), in children with juvenile idiopathic arthritis (JIA).
  
  
  METHODS
  The disability index is the mean of the scores on the eight domains of the CHAQ and can range from 0 (no disability) to 3 (maximum disability). The CHAQ was first translated into French and adapted, then validated in a multicenter cross-sectional study in 306 children with JIA (systemic onset, 23%; polyarticular onset, 22%; extended oligoarticular subtype, 25%; and persistent oligoarticular subtype, 30%).
  
  
  RESULTS
  Overall CHAQ scores discriminated between the four JIA subtypes (systemic: 1.1 +/- 0.9; polyarticular: 0.8 +/- 0.7, extended oligoarticular 0.8 +/- 0.7, and persistent oligoarticular: 0.4 +/- 0.5 [P < 0.0001]). Reproducibility evaluated by test-retest at a 7-day interval was excellent (intraclass coefficient, 0.91), as was agreement between the Parent's and Children's versions of the questionnaire (intraclass coefficient, 0.89). Significant correlations were found between the overall CHAO score and variables reflecting disease severity (joint counts, physician's and parent's global assessments, and erythrocyte sedimentation rate), indicating excellent convergent validity of the tool.
  
  
  CONCLUSIONS
  The French version of the CHAQ displays good psychometric characteristics, although its sensitivity to change remains to be established. The French version of the CHAO should prove useful in international studies and can be expected to be helpful for monitoring individual patients with JIA.
authors.affiliation: Internal Medicine Department, Médecine Interne, Hĵpital Louis Mourier, 178, rue des Renoullers, Colombes, France. jacques.pouchot@lmr.ap-hop-paris.fr
authors.forename: Jacques
authors.initials: J
authors.lastname: Pouchot
authors.forename: Jean-Paul
authors.initials: JP
authors.lastname: Larbre
authors.forename: Irène
authors.initials: I
authors.lastname: Lemelle
authors.forename: Danièle
authors.initials: D
authors.lastname: Sommelet
authors.forename: Eric
authors.initials: E
authors.lastname: Grouteau
authors.forename: Louis
authors.initials: L
authors.lastname: David
authors.forename: Agnès
authors.initials: A
authors.lastname: Duquesne
authors.forename: Chantal Job
authors.initials: CJ
authors.lastname: Deslandre
authors.forename: Isabelle
authors.initials: I
authors.lastname: Koné Paut
authors.forename: Pascal
authors.initials: P
authors.lastname: Pillet
authors.forename: Laurence
authors.initials: L
authors.lastname: Goumy
authors.forename: Catherine
authors.initials: C
authors.lastname: Barbier
authors.forename: Marie-Hélène
authors.initials: MH
authors.lastname: Guyot
authors.forename: Françoise
authors.initials: F
authors.lastname: Mazingue
authors.forename: Sylvie Gandon
authors.initials: SG
authors.lastname: Laloum
authors.forename: Michel
authors.initials: M
authors.lastname: Fischbac
authors.forename: Pierre
authors.initials: P
authors.lastname: Quartier
authors.forename: Claude
authors.initials: C
authors.lastname: Guyot
authors.forename: Sylvie
authors.initials: S
authors.lastname: Jean
authors.forename: Edouard
authors.initials: E
authors.lastname: Legall
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Plouvier
authors.forename: Michel
authors.initials: M
authors.lastname: Bost
authors.forename: Lionel
authors.initials: L
authors.lastname: de Lumley
authors.forename: Christian
authors.initials: C
authors.lastname: Brégeon
authors.forename: Francis
authors.initials: F
authors.lastname: Guillemin
authors.forename: Joël
authors.initials: J
authors.lastname: Coste
authors.forename: Anne-Marie
authors.initials: AM
authors.lastname: Prieur
mesh_terms: D000293:Adolescent; D001171:Arthritis, Juvenile / Q000175:diagnosis* / Q000503:physiopathology / Q000523:psychology; D002648:Child; D003431:Cross-Cultural Comparison; D004185:Disability Evaluation; D005260:Female; D005602:France; D006304:Health Status; D006801:Humans; D007802:Language; D008297:Male; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D014175:Translating