The University of Sheffield ScHARR School of Health and Related Research Sheffield Health Economics Group Discussion Paper Series May 2004 Ref: 04/2 Estimating population cardinal health state valuation models from individual ordinal (rank) health state preference data. Christopher McCabe † ‡ , John Brazier † ‡ , Peter Gilks ‡ , Aki Tsuchiya † , Jennifer Roberts † , Anthony O’Hagan ‡ф Katherine Stevens Sheffield Health Economics Group † , Centre for Bayesian Statistics in Health Economics ‡ Department of Probability and Statistics ф Corresponding Author: Christopher McCabe Sheffield Health Economics Group School of Health and Related Research University of Sheffield Regent Court, Sheffield, UK S1 4DA Email: c.mccabe@sheffield.ac.uk This series is intended to promote discussion and to provide information about work in progress. The views expressed are those of the authors, and should not be quoted without their permission. The authors welcome your comments.