title: Development and psychometric evaluation of a Catalan self- and interviewer-administered version of the Pediatric Quality of Life Inventory version 4.0.
abstract: OBJECTIVE
  The purposes of this study were to develop and to assess the psychometric properties of a Catalan self- and interviewer-administered version of the Pediatric Quality of Life Inventory Generic Core Scales (PedsQL) with a sample of schoolchildren, and to examine the equivalence between both versions.
  
  
  METHODS
  511 schoolchildren aged between 9 and 17 years old participated in the study. In addition to completing a Catalan self-administered version of the PedsQL, each child was interviewed individually.
  
  
  RESULTS
  Confirmatory factor analysis did not support the original Varni's proposal. Instead, a short 12-item version was derived. The higher-order scales for both versions were internally consistent. Moreover, relationships between ratings of children's quality of life were generally significant; both versions were also found to be related with another measure of quality of life supporting their validity.
  
  
  CONCLUSIONS
  A new administration form for the PedsQL is presented in this study. The psychometric properties of both self- and interviewer-administered short 12-item versions are reassuring albeit with a few areas of improvement. Further studies are needed to investigate whether self- and interviewer-administered versions can really be considered to be comparable.
authors.affiliation: Department of Psychology, Rovira i Virgili University Catalonia, Spain. anna.huguet@urv.cat
authors.forename: Anna
authors.initials: A
authors.lastname: Huguet
authors.forename: Jordi
authors.initials: J
authors.lastname: Miró
mesh_terms: D000293:Adolescent; D002648:Child; D005163:Factor Analysis, Statistical; D005260:Female; D006304:Health Status; D006801:Humans; D007406:Interview, Psychological; D008037:Linguistics; D008297:Male; D008960:Models, Psychological; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D013030:Spain; D011795:Surveys and Questionnaires