Canadian-French, German and UK versions of the Child Health Questionnaire: methodology and preliminary item scaling results

UMMS Affiliation

Department of Quantitative Health Sciences

Publication Date


Document Type



Adolescent; Canada; Child; Child, Preschool; Cross-Cultural Comparison; Evaluation Studies as Topic; Female; Germany; Great Britain; *Health Status; Humans; Male; Pilot Projects; Psychometrics; Quality of Life; Questionnaires; Reproducibility of Results; Research Design; *Translations; United States


Biostatistics | Epidemiology | Health Services Research


Using emerging international guidelines, stringent procedures were used to develop and evaluate Canadian-French, German and UK translations/adaptions of the 50 item, parent-completed Child Health Questionnaire (CHQ-PF50). Multitrait analysis was used to evaluate the convergent and discriminant validity of the hypothesized item sets across countries relative to the results obtained for a representative sample of children in the US. Cronbach's alpha coefficient was used to estimate the internal consistency reliability for each of the health scales. Floor and ceiling effects were also examined. Seventy-nine percent of all the item-scale correlations achieved acceptable internal consistency (0.40 or higher). The tests of the item convergent and discriminant validity were successful at least 87% of the time across all scales and countries. Equal item variance was observed 90% of the time across all countries. The reliability coefficients ranged from a low of 0.43 (parental time impact, Canadian English) to a high of 0.97 (physical functioning index, Canadian French) across all scales (median 0.80). Negligible floor effects were observed across countries. Noteworthy ceiling effects were observed, as expected, for the hypothesized physical scales (mean effect 73%). Conversely, fewer ceiling effects were observed for the psychosocial scales (range 3-17% behaviour-parental emotional impact). The item-scaling results obtained in these pilot studies support the psychometric properties of the American-English CHQ-PF50 and its respective translations.

DOI of Published Version



Qual Life Res. 1998 Jul;7(5):433-45. Link to article on publisher's site

Journal/Book/Conference Title

Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation

PubMed ID


Related Resources

Link to Article in PubMed