Figure 4.

User acceptance of the program. The SG preference assessment requires patients to contemplate their own mortality; this can be an unpleasant experience for some people. At the end of the computer interview, subjects were asked to evalute the experience using this program on a five-point Likert-type scale (Very Positive, Generally Positive, Positive and Negative, Generally Negative, and Very Negative). More than 90% of subjects described the experience of using the program as generally positive or very positive despite the potentially unpleasant nature of the tasks required during the computer interview.