König, Hans-Helmut; Günther, Oliver; Angermeyer, Matthias - In: PharmacoEconomics 27 (2009) 5, pp. 405-419
<Emphasis Type="Bold">Background: Preference-based health-state values, also referred to as utility scores, are considered an important measure of outcome in the evaluation of healthcare. A common approach to elicit utility scores is the use of the time trade-off (TTO) method; however, the data on TTO utility scores...</emphasis>