What should we know about the person behind a TTO?

Authors :: Jan J. V. Busschbach
Michel van Agthoven
Werner B. F. Brouwer
Job van Exel
Floortje van Nooten
Health Economics (HE)
Erasmus School of Health Policy & Management
Psychiatry
Applied Economics
Source :: The European Journal Of Health Economics, 19(9), 1207-1211. Springer-Verlag
Publication Year :: 2018
Publisher :: Springer Science and Business Media LLC, 2018.
Abstract: The time trade-off (TTO) method is widely used to obtain quality of life scores for health states, but its validity is not uncontested, for instance because TTO values for similar health states can differ substantially between studies. This could be caused by differences between studies in how the procedure is applied, but could also relate to differences in study samples.