PharmacoEconomics

, Volume 23, Issue 7, pp 659–685 | Cite as

Evaluating health-related quality-of-life studies in paediatric populations

Some conceptual, methodological and developmental considerations and recent applications
  • Mirella De Civita
  • Dean Regier
  • Abul H. Alamgir
  • Aslam H. Anis
  • Mark J. FitzGerald
  • Carlo A. Marra
Review Article

Abstract

Although numerous paediatric-based health-related quality-of-life (HR-QOL) instruments are currently in use, there still remain conceptual, methodological and developmental issues to address. This paper provides an up-to-date critical review of the HR-QOL literature in paediatric medicine.

Our analysis indicates that there is no consensus on how HR-QOL and overall QOL should be defined and measured in children. It is recommended that future studies focus on operationalising and distinguishing these constructs from each other and from traditional health-status measures. A clear empirical basis for generating instrument items and for prioritising specific domains must be described. Researchers should consider using the data gathered during their first interviews as a springboard from which to test their ideas of HR-QOL and QOL, reformulate concepts and subsequently retest their notions before developing instruments.

Related to methodological challenges, consistency and agreement are still used interchangeably when comparing child and parent reports of children’s HR-QOL. The Pearson correlation is a measure of co-variation in scores, and not a measure of agreement. We recommend that researchers focus on determining agreement as opposed to consistency. Few, if any, attempts have been made to account for the possibility that a response shift may have occurred in the evaluation of HR-QOL. Most studies have compared HR-QOL scores of children with illness with their healthy peers. As such, there is a dearth of knowledge regarding the normative process of adaptation within the context of illness. It is recommended that researchers focus on gathering data using a relative standard of comparison. We further recommend that researchers interpret HR-QOL data in line with their intended purpose. Regarding developmental consideration, particular attention ought to be paid to developing instruments that consider children’s emerging sense of self, cognitive capacity and emotional awareness. Instruments that include items that are age appropriate are more likely to maximise reliability and validity of reports.

The results of many HR-QOL instruments are applied in pharmacotherapeutic and pharmacoeconomic assessments. However, there has been relative infrequent application of economically valid HR-QOL tools (utility scales) and the use of HR-QOL scales as outcome measures in paediatric drug trials. As such, few cost-utility analyses have been performed to inform paediatric decision making. In addition, many of the concerns in the development of HR-QOL instruments should also be applied to the utility scales such that they reflect adequately children’s preferences for health states.

Keywords

Juvenile Idiopathic Arthritis Life Domain Response Shift Cochlear Implantation Health Utility Index 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

Dr De Civita is supported by a Canadian Institutes of Health Research post-doctoral fellowship.

Dr Fitzgerald has a Canadian Institutes of Health Research (CIHR)/BC Lung Scientist Award and a Michael Smith Distinguished Scholar Award.

Dr Marra is supported by a Canadian Arthritis Network Scholar Award and a Michael Smith Foundation for Health Research Scholar Award.

None of the authors have any potential conflicts of interest that may arise from the publication of this manuscript.

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Copyright information

© Adis Data Information BV 2005

Authors and Affiliations

  • Mirella De Civita
    • 1
  • Dean Regier
    • 2
  • Abul H. Alamgir
    • 3
  • Aslam H. Anis
    • 3
    • 4
  • Mark J. FitzGerald
    • 2
  • Carlo A. Marra
    • 2
    • 5
  1. 1.Department of MedicineMcGill UniversityMontrealCanada
  2. 2.Centre for Clinical Epidemiology and Evaluation, Vancouver General HospitalUniversity of British ColumbiaVancouverCanada
  3. 3.Department of Health Care and Epidemiology, Faculty of MedicineUniversity of British ColumbiaVancouverCanada
  4. 4.Centre for Health Evaluation and Outcome SciencesSt Paul’s HospitalVancouverCanada
  5. 5.Faculty of Pharmaceutical SciencesUniversity of British ColumbiaVancouverCanada

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