Reliability and validity of the child health questionnaire-child form (CHQ-CF87) in a Dutch adolescent population.
Feasibility, reliability, and discriminative validity of the cross-culturally adapted Dutch version of the originally US child health questionnaire-child form (CHQ-CF87), an 87-item generic pediatric health-related quality of life instrument, were assessed. The success criterion in this first evaluation was the equivalence of psychometric properties of the adapted and the original CHQ. A total of 466 schoolchildren (9-17 years) were invited to complete the questionnaire in the classroom. Test-retest reliability was measured after 14 days in a subgroup (n = 71). Response was 96%. Four scales had ceiling effects (>50%), as was reported in an Australian study. Cronbach alpha-values were adequate (>0.70), except for 'physical functioning' (0.56). Test-retest correlations, not previously reported, were not statistically significant for two CHQ-scales, whereas average retest scores indicated better health for five scales (p < 0.01). The CHQ scales discriminated significantly (p < 0.01) between children without (n = 281) and children with two or more self-reported chronic diseases (n = 59). This is in correspondence with US and Australian reports.


CONCLUSIONS
The current data support application of the Dutch CHQ-CF in predominantly healthy populations, e.g. in school settings. Given the limitations of this study and some less favorable results (score distributions, internal consistency, test-retest reliability), further evaluation of the CHQ-CF is recommended, preferably by analyses of item performance and scale validity in international data sets that include varied clinical subgroups.
Raat
H
H
Department of Public Health, Erasmus University, Rotterdam, The Netherlands. raat@mgz.fgg.eur.nl
Landgraf
J M
JM
Bonsel
G J
GJ
Gemke
R J B J
RJ
Essink-Bot
M L
ML
D000293:Adolescent; D002648:Child; D002669:Child Welfare / Q000523:psychology*; D005240:Feasibility Studies; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D008297:Male; D009426:Netherlands; D000297:Psychology, Adolescent; D002666:Psychology, Child; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires / Q000592:standards*