title: Cross-cultural French adaptation and validation of the Impact On Family Scale (IOFS).
abstract: BACKGROUND
  The IOFS (Impact On Family Scale) questionnaire is a useful instrument to assess the impact of chronic childhood conditions on general family quality of life. As this instrument was not validated in French, we proposed to translate, adapt and validate the IOFS questionnaire for clinical and research use in French-speaking populations.
  
  
  RESULTS
  The sample studied comprised French-speaking parents with a child presenting a cleft lip or cleft lip and palate, aged 6 to 12 years and treated in the University Hospital of Strasbourg, France. The 15-item version of the IOFS was translated into French and then sent to the parents by post. The structure of the measure was studied using Exploratory Factor Analysis (EFA), internal consistency was assessed using Cronbach's alpha coefficient and test-retest reliability was studied by calculating the Intraclass Correlation Coefficient (ICC).
  
  
  CONCLUSIONS
  The French version of the IOFS questionnaire exhibited very good psychometric properties. For practitioners, this instrument will facilitate the assessment of the impact of chronic childhood conditions on quality of life among French-speaking families.
authors.forename: Raphaël
authors.initials: R
authors.lastname: Boudas
authors.forename: Jérémie
authors.initials: J
authors.lastname: Jégu
authors.forename: Bruno
authors.initials: B
authors.lastname: Grollemund
authors.forename: Elvire
authors.initials: E
authors.lastname: Quentel
authors.forename: Anne
authors.initials: A
authors.lastname: Danion-Grilliat
authors.forename: Michel
authors.initials: M
authors.lastname: Velten
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002908:Chronic Disease / Q000208:ethnology / Q000523:psychology; D002971:Cleft Lip / Q000191:economics / Q000523:psychology*; D002972:Cleft Palate / Q000191:economics / Q000523:psychology*; D017281:Cost of Illness; D003431:Cross-Cultural Comparison; D005163:Factor Analysis, Statistical; D005190:Family / Q000523:psychology*; D005260:Female; D005602:France; D006801:Humans; D007398:Interpersonal Relations; D008297:Male; D010287:Parent-Child Relations; D010290:Parents / Q000523:psychology; D025341:Principal Component Analysis; D011594:Psychometrics / Q000295:instrumentation; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires / Q000592:standards*; D014175:Translating