MEDICAL STATISTICS MADE EASY MEDICAL STATISTICS MADE EASY Michael Harris General Practitioner and Lecturer in General Practice, Bath, UK and Gordon Taylor Senior Research Fellow in Medical Statistics, University of Bath, Bath, UK © 2003 Martin Dunitz, an imprint of the Taylor & Francis Group First published in the United Kingdom 2003 by Martin Dunitz, an imprint of the Taylor and Francis Group, 11 New Fetter Lane, London EC4P 4EE Tel: +44 (0) 20 7583 9855; Fax: +44 (0) 20 7842 2298; Email: