Professor Anthony O”Hagan is the Director of The Centre for Bayesian Statistics in Health Economics at the University of Sheffield. The Centre is a collaboration between the Department of Probability and Statistics and the School of Health and Related Research (Sc HARR). The Department of Probability and Statistics is internationally respected for its research in Bayesian statistics, while Sc HARR is one of the leading UK centres for economic evaluation. Prof O”Hagan is an internationally leading expert in Bayesian Statistics. Co-authors: Professor Paul Gathwaite – Open University, Prof of Statistics, Maths and Computing Dr Jeremy Oakley – Sheffield University Professor John Brazier – Director of Health Economics Group, University of Sheffield Dr Tim Rakow – University of Essex, Psychology Department Dr Alireza Daneshkhah – University of Sheffield, Medical Statistics Department Dr Jim Chilcott – School of Health Research, University of Sheffield, Department of OR