Fig. 1

A conceptual illustration of a composite TTO task for health states considered better than dead on a scale where 0 represents a state as bad as being dead and 1 represents full health. The respondent is asked to choose between 2 lives: x years in full health, or t years in an impaired health state. A An example of a less severe health state that would be given a relatively high value. B An example of a more severe health state that would be given a relatively low value