Abstract
Valuing the health of children for cost-utility or cost-benefit analysis poses a number of additional challenges when compared with valuing adult health. Some of these challenges relate to the inability of young children to value changes in health directly and the potential biases associated with using proxy respondents. Other challenges arise from children not being able to perform as independent economic actors, but dependent on others for care and decision making. In addition, illness in children may affect parent/caregiver quality of life, further complicating the measurement of value associated with a change in a child’s health status.
We review the most common approaches (QALYs and willingness-to-pay values) for valuing health in economic evaluations and consider the methodological and practical issues associated with measuring child health using each framework. Recommendations for advancing the field of valuing child health for economic evaluations will vary by age; a ‘one size fits all’ approach does not readily fit. Although limitations exist for all of the methods considered for valuing child health, the currently recommended approach for infants and preschoolers is direct valuation by a proxy respondent. For school-age children and adolescents, existing multi-attribute instruments can be applied in some situations but direct valuation may be required for others. Future research should focus on minimising bias from proxy respondents, consideration of a family- or household-based approach to valuing health effects, and development of generic instruments with domains that are appropriate to children and that vary with age.
Similar content being viewed by others
References
IOM Board on Health Care Services, Committee to Evaluate Measures of Health Benefits for Environmental Health and Safety Regulations. Miller W, Robinson LA, Lawrence RS, editors. Valuing health for regulatory cost-effectiveness analysis. Washington, DC: The National Academies Press, 2006: 1–380
US Environmental Protection Agency, Office of Children’s Health Protection. Children’s health valuation handbook. Washington: EPA, 2003 [online]. Available from URL: http://yosemite.epa.gov/ee/epa/eed.nsf/pages/handbookchildren-shealthvaluation.html [Accessed 2007 Aug 23]
Organisation for Economic Cooperation and Development (OECD). Economic valuation of environmental health risks to children. Paris: OECD Publishing, 2006
Keren R, Pati S, Feudtner C. The generation gap: differences between children and adults pertinent to economic evaluations of health interventions. Pharmacoeconomics 2004; 22: 71–81
Griebsch I, Coast J, Brown J. Quality-adjusted life-years lack quality in pediatric care: a critical review of published cost-utility studies in child health. Pediatrics 2005; 115: e600–e6008
Matza LS, Swensen AR, Flood EM, et al. Assessment of health-related quality of life in children: a review of conceptual, methodological, and regulatory issues. Value Health 2004; 7: 79–92
Ungar WJ, Santos MT. Quality appraisal of pediatric health economic evaluations. Int J Technol Assess Health Care 2005; 21: 203–210
Ladapo JA, Neumann PJ, Keren R, et al. Valuing children’s health: a comparison of cost-utility analyses for adult and pediatric health interventions. Pharmacoeconomics. In press
Varni JW, Seid M, Rode CA. The PedsQL: measurements model for the pediatric quality of life inventory. Medical Care 1998; 37: 126–139
Raat H, Bottweweck A, Landgraf JM, et al. Reliablity and validity of the short form of child health questionnaire for parents (CHQ-PF28) in large random school based and general population samples. J Epidemiol Community Health 2005; 59 (1): 75–82
Robitail S, Simeoni MC, Erhart M, et al. Validation of the European proxy KIDSCREEN-52 pilot test health-related quality of life questionnaire: first results. J Adolesc Health 2006; 39: el–e10
Vogels T, Verrips GH, Verloove-Vanhorick SP, et al. Measuring health-related quality of life in children: the development of the TACQOL parent form. Qual Life Res 1998; 7: 457–465
Bennett KJ, Torrance GW. Measuring health state preferences and utilities: rating scale, time trade-off, and standard gamble techniques. In: Spilker B, editor. Quality of life and pharmacoeconomics in clinical trials. Philadelphia (PA): Lippincott-Raven, 1996: 253–265
Russell LB, Gold MR, Siegel JE, et al. The role of cost-effectiveness analysis in health and medicine. JAMA 1996; 276: 1172–1177
Neumann PJ, Goldie S J, Weinstein MC. Preference-based measures in economic evaluation in health care. Annu Rev Pub Health 2000: 21: 1–25
Gold MR, Siegel JE, Russell LB, et al, editors. Cost-effectiveness in health and medicine. New York: Oxford University Press, 1996
Eiser C, Morse R. Quality-of-life measures in chronic diseases of childhood. Health Technol Assess 2001; 5: 1–156
Harbaugh WT. Valuing children’s health and life: what does economic theory say about including parental and societal willingness to pay? [working paper]. Eugene (OR): University of Oregon Economics Department, 2001: 19
Bergstrom T. Valuing environmental health risk reductions to children: proceedings of session II. Household decision making. A workshop sponsored by the US Environmental Protection Agency’s NCEE, NCER, and Office of Children’s Health Protection; and the University of Central Florida; Washington, DC; 2003 Oct 20–21 [online]. Available from URL: http://es.epa.gov/ncer/publications/workshop/pdf/EE-0475-03.pdf [Accessed 2007 Jul 27]
Cockerill CA, Chilton SM, Hutchinson WG. How does the choice of household decision making model affect the value of child safety? Paper presented at the Third World Congress of Environmental and Resource Economists; 2006 Jul 3–7; Kyoto
Petrou S. Methodological issues raised by preference-based approaches to measuring the health status of children. Health Econ 2003; 12: 697–702
Rosenbaum PL, Saigal S. Measuring health-related quality of life in pediatric populations: conceptual issues. In: Spilker B, editor. Quality of life and pharmacoeconomics in clinical trials. Philadelphia (PA): Lippincott-Raven Publishers, 1996: 785–791
De Civita M, Regier D, Alamgir AH, et al. Evaluating health-related quality-of-life studies in paediatric populations: some conceptual, methodological and developmental considerations and recent applications. Pharmacoeconomics 2005; 23: 659–685
Pliskin JS, Shepard DS, Weinstein MC. Utility functions for life years and health status. Oper Res 1980; 28: 206–224
Bleichrodt H, Wakker P, Johannesson M. Characterizing QALYs by risk neutrality. J Risk Uncertain 1997; 15: 107–114
Johannesson M, Pliskin JS, Weinstein M. A note on QALYs, time tradeoff, and discounting. Med Dec Making 1994; 14: 188–193
Wakker P, Stiggelbout A. Explaining distortions in utility elicitation through the rank-dependent model for risky choices. Med Dec Making 1995; 15: 180–186
Bleichrodt H, Diecidue E, Quiggin J. Equity weights in the allocation of health care: the rank-dependent QALY model. J Health Econ 2004; 23: 157–171
Mehrez A, Gafni A. The healthy-years equivalents. Med Decis Making 1991; 11: 140–146
Lieu TA, McGuire TG, Hinman AR. Overcoming economic barriers to the optimal use of vaccines. Health Aff 2005; 24: 666–679
Lee GM, Salomon JA, LeBaron C, et al. Health-state valuations for pertussis: methods for valuing short-term health states. Health Qual Life Outcomes 2005; 3: 17–31
Bala MV, Wood LL, Zarkin GA, et al. Are health states “timeless”? The case of the standard gamble method. J Clin Epidemiol 1999; 52: 1047–1053
Binkin NJ, Koplan JP. The high cost and low efficacy of weekly viral cultures for pregnant women with recurrent genital herpes: a reappraisal. Med Decis Making 1989; 9: 225–230
Rowley PT, Loader S, Kaplan RM. Prenatal screening for cystic fibrosis carriers: an economic evaluation. Am J Hum Genet 1998; 63: 1160–1174
Prosser LA, Ray GT, O’Brien M, et al. Preferences and willingness to pay for health states prevented by pneumococcal conjugate vaccine. Pediatrics 2004; 113: 283–290
Basu A, Meltzer D. Implications of spillover effects within the family for medical cost-effectiveness analysis. J Health Econ 2005; 24: 751–773
Hammitt IK. Willingness to pay and quality adjusted life years. In: Scapecchi P, editor. Economic valuation of environmental health risks to children. Paris: OECD Publishing, 2006: 239–272
Drummond MF, Sculpher MI, Torrance GW, et al. Methods for the economic evaluation of health care programmes. 3rd ed. New York: Oxford University Press, 2005
Liu I, Hammitt IK, Wang I, et al. Mother’s willingness to pay for her own and her child’s health: a contingent valuation study in Taiwan. Health Econ 2000; 9: 319–326
Dickie M, Messman VL. Parental alturism and the value of avoiding acute illness: are kids worth more than parents? J Environ Econ Mgmt 2004; 48: 1146–1174
Prosser LA, Bridges CB, Uyeki TM, et al. Values for preventing influenza-related morbidity and vaccine adverse events in children. Health Qual Life Outcomes 2005; 3: 1–16
Juniper EF, Guyatt GH, Feeny DH, et al. Minimum skills required by children to complete health-related quality of life instruments for asthma: comparison of measurement properties. Eur Respir 11997; 10: 2285–2294
Saigal S, Stoskopf BL, Feeny D, et al. Differences in preferences for neonatal outcomes among health care professionals, parents, and adolescents. IAMA 1999; 281: 1991–1997
Saigal S, Rosenbaum PL, Feeny D, et al. Parental perspectives of the health status and health-related quality of life of teen-aged children who were extremely low birth weight and term controls. Pediatrics 2000; 105: 569–574
Saigal S, Rosenbaum PL, Hoult L, et al. Conceptual and methodological issues in assessing health-related quality of life in children and adolescents: illustration from studies of extremely low birthweight survivors. In: Drotar D, editor. Measuring health-related quality of life in children and adolescents: implications for research and practice. Mawah (NI): Lawrence Erlbaum Associates, 2006: 151–169
Nightingale EO, Fischhoff B. Adolescent risk and vulnerability: overview. J Adolescent Health 2002; 315: 3–9
Millstein SG, Halpern-Felsher BL. Perceptions of risk and vulnerability. J Adolescent Health 2002; 31S: 10–27
Woloshin S, Schwartz LM, Moncur M, et al. Assessing values for health: numeracy matters. Med Dec is Making 2001; 21: 382–390
Nord E. Cost-value analysis in health care: making sense out of QALYs. New York: Cambridge University Press, 1999
Ravens-Sieberer U, Erhart M, Wille N, et al. Generic health-related quality-of-life assessment in children and adolescents: methodological considerations. Pharmacoeconomics 2006; 24: 1199–1220
Brock DW. Ethical issues in the use of cost effectiveness analysis for the prioritization of health care resources. In: Anand S, Peter F, Sen A, editors. Public health, ethics, and equity. New York: Oxford University Press, 2004: 201–224
Neumann PI, Kuntz KM, Leon I, et al. Health utilities in Alzheimer’s disease: a cross-sectional study of patients and caregivers. Med Care 1999; 37: 27–32
Ryan M, Scott DA, Donaldson C. Valuing health care using willingness to pay: a comparison of the payment card and diehotomous choice methods. J Health Econ 2004; 23: 237–258
Shaw IW, Johnson IA, Coons SI. US valuation of the EQ-5D health states: development and testing of the Dl valuation model. Med Care 2005; 43: 203–220
Feeny D, Furlong W, Boyle M, et al. Multi-attribute health status classification systems: Health Utilities Index. Pharmacoeconomics 1995; 7: 490–502
Sieber WI, Groessl EI, David KM, et al. Quality of well-being scale self-administered (QWB-SA) scale. San Diego (CA): Health Outcomes Assessment Program, 2004: 1–38
Hennessy S, Kind P. Measuring health status in children: developing and testing a child-friendly version of EQ-5D. 19th Plenary Meeting of the EuroQol Group; 2002 Sep 13–14; York: 219–310
Torrance GW, Feeny D, Furlong WI, et al. Multiattribute utility function for a comprehensive health status classification system: Health Utilities Index Mark 2. Med Care 1996; 34 (7): 702–722
Feeny D, Furlong W, Torrance GW, et al. Multiattribute and single-attribute utility functions for the health utilities index mark 3 system. Med Care 2002; 40 (2): 113–128
Brazier I, Roberts I, Deverill M. The estimation of a preference-based measure of health from the SF-36. J Health Econ 2002; 21: 271–292
Bryan S, Parkin D, Donaldson C. Chiropody and the QALY: a case study in assigning categories of disability and distress to patients. Health Policy 1991; 18: 169–185
Erickson P. Modeling health-related quality of life: the bridge between psychometric and utility based measures. J Natl Cancer Inst Monogr 1996; 20: 17–22
Kelly AE Haddix AC, Scanlon KS, et al. Cost-effectiveness of strategies to prevent neural tube defects. In: Gold MR, Russell LB, Siegel IE, et al., editors. Cost-effectiveness in health and medicine. New York: Oxford University Press, 1996: 313–348
Dolan P. Output measures and valuation in health. In: Dummond M, McGuire A, editors. Economic evaluation in health care: merging theory with practice. New York: Oxford University Press, 2001: 46–67
Stalmeier PFM, Goldstein MK, Holmes AM, et al. What should be reported in a methods section on utility assessment? Med Dec Making 2001; 21: 200–207
Boyle MH, Offord DR, Hofmann HG, et al. Ontario child health study: 1. Methodology. Arch Gen Psychiatry 1987; 44: 826–831
Raat H, Landgraf JM, Oostenbrink R, et al. Reliability and validity of the Infant and Toddler Quality of Life Questionnaire (ITQOL) in a general population and respiratory disease sample. Qual Life Res 2007; 16: 445–460
Eisen M, Ware IE, Donald C, et al. Measuring components of children’s health status. Med Care 1979; 17: 902–921
Landgraf JM, Abetz LN. Measuring health outcomes in pediatric populations: issues in psycho metrics. In: Spilker B, editor. Quality of life and pharmacoeconomics in clinical trials. Philadelphia (PA): Lippincott-Raven Publishers, 1996: 793–802
Swan JS, Fryback DG, Lawrence WF, et al. A time-tradeoff method for cost-effectiveness models applied to radiology. Med Decis Making 2000; 20: 79–88
Phillips KA, Maddala T, Johnson FR. Measuring preferences for health care interventions using conjoint analysis: an application to HIV testing. Health Serv Res 2002; 37: 1681–1705
Johnston K, Brown J, Gerard K, et al. Valuing temporary and chronic health states associated with breast screening. Soc Sci Med 1998; 47: 213–222
Swan JS, Sainfort F, Lawrence WF, et al. Process utility for imaging in cerebrovascular disease. Acad Rad 2003; 10: 266–274
Brazier J, Roberts J, Deverill M. The estimation of a preference-based measure of health from the SF-36. J Health Econ 2002; 21 (2): 271–292
Dolan P, Kind P. Inconsistency and health state valuations. Soc Sci Med 1996; 42: 609–615
Dolan P. The measurement of health-related quality of life for use in resource allocation decisions in health care. In: Culyer A J, Newhouse JP, editors. Handbook of health economics. Boston (MA): Elsevier Inc., 2000: 1723–1760
Ryan M, Farrar S. Using conjoint analysis to elicit preferences for health care. BMJ 2000; 320: 1530–1533
Hauber AB, Johnson FR, Sauriol L, et al. Risking health to avoid injections: preferences of Canadians with type 2 diabetes. Diabetes Care 2005; 28: 2243–2245
Osoba D, Hsu M, Copley-Merriman C, et al. Stated preferences of patients with cancer for health-related quality-of-life (HRQOL) domains during treatment. Qual Life Res 2006; 15: 273–283
Salomon JA. Reconsidering the use of rankings in the valuation of health states: a model for estimating cardinal values from ordinal data. Popul Health Metr 2003; 1: 12
Bryan S, Dolan P. Discrete choice experiments in health economics: for better or worse? Eur J Health Econ 2004; 5: 202
Acknowledgements
Dr Keren was supported by grant D23 HD043179 from the National Institute of Child Health and Human Development, NIH. The authors have no conflicts of interest that are directly relevant to the contents of this review.
The authors greatly appreciate helpful comments from Milt Weinstein, Tracy Lieu and attendees of the Center for Child Health Care Studies Work in Progress Seminar regarding earlier versions of this manuscript.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Prosser, L.A., Hammitt, J.K. & Keren, R. Measuring Health Preferences for Use in Cost-Utility and Cost-Benefit Analyses of Interventions in Children. Pharmacoeconomics 25, 713–726 (2007). https://doi.org/10.2165/00019053-200725090-00001
Published:
Issue Date:
DOI: https://doi.org/10.2165/00019053-200725090-00001