An assessment of the construct validity of the CHU9D in the Australian adolescent general population
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To assess the construct validity of the CHU9D in an adolescent general population sample. The CHU9D is a new generic preference-based measure of health-related quality of life developed specifically for application in the economic evaluation of health care treatments and interventions for young people.
A web-based survey was developed including the CHU9D and HUI2 instruments and administered to a community-based sample of consenting adolescents (n = 710) aged 11–17 years. The practicality, face and construct validity of the CHU9D was examined. The relationship between the CHU9D and HUI2 instruments was assessed by a comparison of responses to similar dimensions and the utility scores derived from the two instruments.
The CHU9D demonstrated high completion rates. CHU9D was able to discriminate between respondents according to their self-reported general health (Kruskal–Wallis P value <0.001). The mean CHU9D adolescent population utilities were similar to those generated from the HUI2 [Mean (SD) CHU9D utility 0.844 (0.102) and HUI2 utility 0.872 (0.138)], and the intra-class correlation coefficient indicated good levels of agreement overall (ICC = 0.742).
The findings from this study provide support for the practicality, face and construct validity of the CHU9D for application with adolescents aged 11–17 years.
KeywordsAdolescents Quality-adjusted life years Questionnaires Outcome assessment (health care) Community
Assessment of quality of life
Child health utility 9D
Cost utility analysis
Family affluence scale
Health utilities mark 2
Multi-attribute utility function
Quality-adjusted life year
Visual analogue scale
The authors would like to thank Dr Steve Quinn for his helpful comments on a previous version of this paper. This study was supported by a Flinders University seeding grant.
Conflict of interest
This study has been approved by the Social and Behavioural Research Ethics Committee, Flinders University, project number: 4701.
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