Attema, AE and Versteegh, MM (2012): Would you rather be ill now, or later?
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The Time Tradeoff (TTO) method is used to calculate the quality adjustment of the Quality Adjusted Life Year, and is therefore an important element in the calculation of the benefits of medical interventions. New specifications of TTO, known as ‘lead time’ TTO and ‘lag time’ TTO, have been developed to overcome methodological issues of the ‘classic’ TTO. In the lead time TTO, ill-health is explicitly placed in the future, after a period of good health, while in lag time TTO a health state starts immediately and is followed by a ‘lag time’ of good health. In this study, we take advantage of these timing properties of lead and lag time TTO. In particular, we use data from a previous study that employed lead and lag time TTO to estimate their implied discounting parameters. We show that individuals prefer being ill later, rather than now, with larger per-period discount rates for longer durations of the health states.
|Item Type:||MPRA Paper|
|Original Title:||Would you rather be ill now, or later?|
|Keywords:||TTO; Time preference; discounting; lead time TTO; lag time TTO|
|Subjects:||D - Microeconomics > D9 - Intertemporal Choice > D90 - General
I - Health, Education, and Welfare > I1 - Health > I10 - General
|Depositing User:||Arthur Attema|
|Date Deposited:||11. Apr 2012 00:34|
|Last Modified:||03. Jul 2015 06:07|
Attema AE, Versteegh MM, Oppe M, Brouwer WBF, Stolk EA. forthcoming a. Lead time TTO: Leading to better health state valuations? Health Economics.
Attema AE, Bleichrodt H, Wakker PP. forthcoming b. A direct method for measuring discounting and QALYs more easily and reliably. Medical Decision Making.
Cairns J. 1992. Health, wealth and time preference. Project Appraisal 7(1) : 31-40.
Cairns J, van der Pol M. 1997a. Constant and decreasing timing aversion for saving lives. Social Science & Medicine 45(11) : 1653-1659.
Cairns JA, van der Pol, Marjon M. 1997b. Saving Future Lives. A Comparison of Three Discounting Models. Health Economics 6 4 341-350.
Chapman GB. 1996. Temporal discounting and utility for health and money. Journal of Experimental Psychology: Learning, Memory & Cognition 22(3) : 771-791.
Chapman GB, Nelson R, Hier DB. 1999. Familiarity and time preferences: decision making about treatments for migraine headaches and Crohn's disease. Journal of Experimental Psychology: Applied 5(1) : 17-34.
Cropper ML, Aydede SK, Portney PR. 1991. Discounting Human Lives. American Journal of Agricultural Economics 73 5 1410-1415.
Cropper M, Aydede SK, Portney PR. 1992. Rates of time preference for saving lives. American Economic Review 82 469-472.
Cropper M, Aydede SK, Portney P. 1994. Preferences for live saving programs: how the public discounts time and age. Journal of Risk and Uncertainty 8 243-265.
Devlin NJ, Buckingham K, Tsuchiya A, Shah K, Tilling C, Wilkinson G, van Hout BA. forthcoming. A comparison of alternative variants of the lead and lag time TTO. Health Economics.
Devlin N, Tsuchiya A, Buckingham K, Tilling C. 2011. A uniform Time Trade Off method for states better and worse than dead: feasibility study of the ‘lead time’ approach. Health Economics 20(3) : 348-361.
Dolan P, Gudex C. 1995. Time preference, duration and health state valuations. Health Econ 4(4) : 289-299.
Ganiats TG, Carson RT, Hamm RM, Cantor SB, Sumner W, Spann SJ, Hagen MD, Miller C. 2000. Population-based Time Preferences for Future Health Outcomes. Medical Decision Making 20(3) : 263-270.
Lazaro Alquezar A, Barberan R, Rubio E. 2001. Private and social time preferences for health and money: An empirical estimation. Health Economics 10 351-356.
Loewenstein G. 1987. Anticipation and the Valuation of Delayed Consumption. Economic Journal 97(387) : 666-684.
Loewenstein G, Prelec D. 1991. Negative Time Preference. American Economic Review 81 2 347-352.
MacKeigan LD, Gafni A, O'Brien BJ. 2003. Double discounting of QALYs. Health Economics 12(2) : 165-169.
Martin AJ, Glasziou PP, Simes RJ, Lumley T. 2000. A comparison of standard gamble, time trade-off, and adjusted time trade-off scores. International Journal of Technology Assessment in Health Care 16(1) : 137-147.
Olsen JA. 1994. Persons vs years: two ways of eliciting implicit weights. Health Economics 3(1) : 39-46.
Redelmeier DA, Heller DN. 1993. Time preferences in medical decision making and cost-effectiveness analysis. Medical Decision Making 13 212-217.
Robinson A, Spencer A. 2006. Exploring challenges to TTO utilities: valuing states worse than dead. Health Economics 15(4) : 393-402.
Stiggelbout AM, Kiebert GM, Kievit J, Leer JW, Stoter G, de Haes JC. 1994. Utility assessment in cancer patients: adjustment of time tradeoff scores for the utility of life years and comparison with standard gamble scores. Medical Decision Making 14(1) : 82-90.
van Osch SM, Wakker PP, van den Hout, W. B., Stiggelbout AM. 2004. Correcting biases in standard gamble and time tradeoff utilities. Medical Decision Making 24(5) : 511-517.
Versteegh MM, Attema AE, Oppe M, Devlin NJ, Stolk EA. 2012. Time to tweak the TTO. But how? Working paper.