The University of Sheffield ScHARR School of Health and Related Research Sheffield Health Economics Group Discussion Paper Series November 2002 Ref: 02/3 Sample sizes for the SF-6D preference based measure of health from the SF-36: a practical guide Stephen J. Walters* Lecturer in Medical Statistics Sheffield Health Economics Group, University of Sheffield John E. Brazier Professor of Health Economics Sheffield Health Economics Group, University of Sheffield * Corresponding Author: Sheffield Health Economics Group, School of Health and Related Research University of Sheffield, Regent Court, 30 Regent Street, Sheffield, UK, S1 4DA Tel +44 114 222 0715 Fax +44 114 272 4095 email: s.j.walters@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.