A COMPARISON OF ALTERNATIVE VARIANTS OF THE LEAD AND LAG TIME TTO
Nancy Devlin, Ken Buckingham, Koonal Shah, Aki Tsuchiya, Carl Tilling, Grahame Wilkinson, Ben Van Hout
HEALTH ECONOMICS | WILEY-BLACKWELL | Published : 2013
'Lead Time' TTO improves upon conventional TTO by providing a uniform method for eliciting positive and negative values. This research investigates (i) the values generated from different combinations of time in poor health and in full health; and the order in which these appear (lead vs. lag); (ii) whether values concur with participants' views about states; (iii) methods for handling extreme preferences. n = 208 participants valued five EQ-5D states, using two of four variants. Combinations of lead time and health state duration were: 10 years and 20 years; 5 years and 1 year; 5 years and 10 years; and a health state duration of 5 years with a lag time of 10 years. Longer lead times captur..View full abstract
Awarded by Department of Health Policy Research Programme
We are grateful to all interviewees who took part in our study. Ethics approval for this research was obtained from the University of Sheffield. This study was funded by the Department of Health Policy Research Programme grant PRP 070-0065. Support for the pilot study was provided by the EuroQol Foundation. Views expressed in the paper are those of the authors and not of the Department of Health. Helpful comments on an earlier draft were received from Leida Lamers, Martin Buxton, participants in the 2010 Scientific Plenary of the EuroQol Group, and two anonymous referees for Health Economics.