The German version of the Child Perceptions Questionnaire (CPQ-G11-14): Translation process, reliability, and validity in the general population

Katrin Bekes, Mike T. John, Rona Zyriax, Hans Günter Schaller, Christian Hirsch

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The aims of this study were to develop a German version of the Child Perceptions Questionnaire (CPQ11-14, a measure of oral health-related quality of life in 11-14-year-old children) and to assess the instrument's reliability and validity in German children ages 11-14. The English original version of the CPQ11-14 questionnaire was translated into German (CPQ-G11-14) by a forward-backward translation method. Reliability was investigated in 1,061 subjects aged 11-14 years from a regional sample (Wernigerode, Saxonia-Anhalt, Germany) who were recruited during the annual dental public health examination. The subjects completed the CPQ-G11-14 and were clinically examined for the presence of dental caries, plaque accumulation, and malocclusion. In the reliability assessment, questionnaire summary score test-retest reliability was excellent (intraclass correlation coefficient, 95% confidence interval (CI) = 0. 83, 0. 73-0. 94) and internal consistency was satisfactory (Cronbach's alpha, lower limit of CI = 0. 87, 0. 86). Validity of the CPQ-G11-14 questionnaire was supported by correlations with global ratings of oral health and overall well-being that were moderate in magnitude and met expectations (r = 0. 35; 95% CI, 0. 30-0. 40 and r = 0. 30; 95% CI, 0. 24-0. 35, respectively). In conclusion, the German version of the CPQ11-14 was reliable and valid in a general population of 11-14-year-old German children.

Original languageEnglish (US)
Pages (from-to)165-171
Number of pages7
JournalClinical oral investigations
Issue number1
StatePublished - Feb 2012

Bibliographical note

Funding Information:
Acknowledgements The study was supported by GABA International. The authors are grateful to Ms. Annett Schrock (University of Leipzig) for her help with data management and analysis.

Copyright 2012 Elsevier B.V., All rights reserved.


  • Child Perceptions Questionnaire (CPQ)
  • Oral health-related quality of life (OHRQoL)
  • Psychometric properties
  • Reliability
  • Validity


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