title: Comparison of the web-based and paper [corrected] questionnaires of the Spanish and Catalan versionsof the KIDSCREEN-52.
abstract: BACKGROUND
  The objectives of the study were to develop web-based Spanish and Catalan versions of the KIDSCREEN, and to compare scores and psychometric properties with the paper version.
  
  
  METHODS
  Internet and paper Spanish and Catalan versions of the KIDSCREEN-52 were included in a cross-sectional study in school-age children. Web-based and paper Spanish or Catalan versions of the KIDSCREEN-52 were administered to students aged 8 to 18 years from primary and secondary schools in Palafolls (Barcelona, Spain, n = 923). All students completed both web-based and paper versions during school time with an interval of at least 2 hours between administrations. The order of administration was randomized. The KIDSCREEN-52, the Strengths and Difficulties Questionnaire (SDQ), and sociodemographic variables were collected. Missing values, floor and ceiling effects, and internal consistency were compared between both versions, as well as mean score differences, level of agreement, and known groups and construct validity.
  
  
  RESULTS
  Participation rate was 77% (n = 715). Web-based and paper versions showed low percentage of missing values and similar high ceiling effect (range 0 to 44%). Mean score differences showed an effect size (ES) lower than 0.2 in all dimensions. Internal consistency ranged from 0.7 to 0.88, and degree of agreement was excellent (Intraclass correlation coefficient [ICC] range 0.75 to 0.87). Expected differences were seen by sex, age, socioeconomic status and mental health status.
  
  
  CONCLUSIONS
  The web-based KIDSCREEN-52 showed similar scale score and reliability and validity than the paper version. It will incorporate the child population in the assessment of quality of life providing a more attractive format.
authors.affiliation: Agència de Qualitat i Avaluació Sanitàries de Catalunya, Barcelona, Spain; IMIM (Institut Hospital del Mar de Recerca Biomèdica), Barcelona, Spain; Centro de Investigación Epidemiológica en Red (CIBERESP), Madrid, Spain.
authors.forename: Luis
authors.initials: L
authors.lastname: Rajmil
authors.affiliation: Agència de Qualitat i Avaluació Sanitàries de Catalunya, Barcelona, Spain.
authors.forename: Noemí
authors.initials: N
authors.lastname: Robles
authors.affiliation: Agència de Qualitat i Avaluació Sanitàries de Catalunya, Barcelona, Spain.
authors.forename: Dolors
authors.initials: D
authors.lastname: Rodriguez-Arjona
authors.affiliation: Corporació de Salut del Maresme i la Selva, Sant Jaume, 209-217, 08370 Calella, Spain.
authors.forename: Marta
authors.initials: M
authors.lastname: Azuara
authors.affiliation: Corporació de Salut del Maresme i la Selva, Sant Jaume, 209-217, 08370 Calella, Spain.
authors.forename: Francisco
authors.initials: F
authors.lastname: Codina
authors.affiliation: Department of Public Health, Erasmus MC - University Medical Center Rotterdam, The Netherlands.
authors.forename: Hein
authors.initials: H
authors.lastname: Raat
authors.affiliation: Department of Child and Adolescent Psychiatry, Psychotherapy, and Psychosomatics, University Medical Center Hamburg-Eppendorf, Martinistr. 52 (W29), 20246 Hamburg, Germany.
authors.forename: Ulrike
authors.initials: U
authors.lastname: Ravens-Sieberer
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D020407:Internet; D007802:Language; D008297:Male; D012737:Sex Factors; D012959:Socioeconomic Factors; D013030:Spain; D011795:Surveys and Questionnaires