The correction of TTO-scores for utility curvature using a risk-free utility elicitation method.
This paper describes and employs a new method to correct time tradeoff (TTO)-scores for utility of life duration curvature. In contrast to most previous attempts to do so, it uses a risk-free method that corresponds well to the risk-free properties of the TTO-method. In addition, the method is robust to several biases that occur under methods that incorporate risk. Our results show a significant degree of curvature in utility of life duration and therefore a clear bias in TTO-scores. The risk-free method seems to be useful to correct TTO-scores for this influence and leads to significantly higher quality-adjustment factors.
Attema
Arthur E
AE
Department of Health Policy and Management, Erasmus University Medical Centre, PO Box 1738, 3000 DR Rotterdam, The Netherlands. a.attema@erasmusmc.nl
Brouwer
Werner B F
WB
D000293:Adolescent; D000328:Adult; D002755:Choice Behavior; D005260:Female; D006304:Health Status; D006801:Humans; D008017:Life Expectancy; D008297:Male; D015233:Models, Statistical; D019057:Quality-Adjusted Life Years; D018570:Risk Assessment / Q000379:methods; D011795:Surveys and Questionnaires; D055815:Young Adult