title: Effects of method of administration on oral health-related quality of life assessment using the Child Perceptions Questionnaire (CPQ-G11-14).
abstract: OBJECTIVE
  Questionnaires that measure oral health-related quality of life (OHRQoL) in children and adolescents have emerged in recent years as an important source of patient-reported outcomes. The aim of this study was to investigate potential effects of the method of administration (face-to-face interview, telephone interview, or self-administered questionnaire) in 11- to 14-year-old children and adolescents on OHRQoL information obtained using the Child Perceptions Questionnaire (CPQ).
  
  
  METHODS
  OHRQoL was measured using the German version of the CPQ (CPQ-G11-14). The instrument was administered to 42 children and adolescents aged 11 to 14 years using the three different methods in a randomized order with an interval of 1 week between each administration. Test-retest reliability for the repeated CPQ-G11-14 assessments across the three methods of administration, internal consistency, and convergent validity were determined.
  
  
  RESULTS
  The CPQ-G11-14 mean summary scores did not vary statistically significantly across the three administration methods (P = 0.274). Test-retest reliability was moderate to good (ICC 0.69-0.82), internal consistency was satisfactory (Cronbach's alpha 0.85-0.88), and CPQ-G11-14 mean summary scores were correlated in the expected direction with a global measure of self-reported oral health for all the three administration methods.
  
  
  CONCLUSIONS
  In conclusion, the method of administration (face-to-face interview, telephone interview, or self-administered questionnaire) did not influence CPQ-G11-14 scores in 11- to 14-year-old children and adolescents to a significant extent.
  
  
  CONCLUSIONS
  Investigators in German-speaking countries can choose between all three methods of administration to obtain valid and reliable OHRQoL information.
authors.affiliation: Department of Paediatric Dentistry, University of Leipzig, Liebigstrasse 12, House 1, 04103, Leipzig, Germany.
authors.forename: Sandra
authors.initials: S
authors.lastname: Malter
authors.affiliation: Department of Paediatric Dentistry, University of Leipzig, Liebigstrasse 12, House 1, 04103, Leipzig, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Hirsch
authors.affiliation: Department of Prosthetic Dentistry, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany.|Department of Diagnostic and Biological Sciences, University of Minnesota, 6-320d Moos Tower, 515 Delaware Street SE, Minneapolis, MN, 55455, USA.
authors.forename: Daniel R
authors.initials: DR
authors.lastname: Reissmann
authors.affiliation: Department of Prosthetic Dentistry, University of Leipzig, Liebigstrasse 12, House 1, 04103, Leipzig, Germany.
authors.forename: Oliver
authors.initials: O
authors.lastname: Schierz
authors.affiliation: Department of Paediatric Dentistry, Martin-Luther-University Halle-Wittenberg, Harz 42a, 06114, Halle, Germany. katrin.bekes@uk-halle.de.
authors.forename: Katrin
authors.initials: K
authors.lastname: Bekes
mesh_terms: D000293:Adolescent; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D009909:Oral Health; D011788:Quality of Life; D011795:Surveys and Questionnaires
keywords: Administration methods; Child Perceptions Questionnaire (CPQ); Oral health-related quality of life (OHRQoL)