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An experimental test of question framing in health state utility assessment
K Blumenschein1, M Johannesson
1College of Pharmacy, University of Kentucky, Lexington, USA. hemj@hhs.se
Abstract:
In the standard gamble and time trade-off methods of health state utility assessment, a specified health state and an alternative are compared. This alternative can be framed in terms of a loss or a gain in reference to the first health state. In this paper, we test whether this framing affects the estimated health state utilities. The experiment was carried out on a group of pharmacy students, randomly divided between the loss or gain version (n = 182). The null hypothesis of no difference between the loss and gain versions is rejected for the standard gamble method, but not for the time trade-off method.
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