Product Description Critical appraisal is now the central focus of evidence-based medicine and knowledge-based healthcare, and is currently a major influence in most countries. This second edition has been thoroughly revised and new sections on meta-analysis, evidence based medicine and misclassification have been added. This book presents a system of critical appraisal to help the reader evaluate studies in the health and medical fields. Review " I recommend a close look at this book by those who teach critical appraisal and by anyone who seeks a deeper understanding of the underlying methods." RCPSC Annals (Sept 1998) About the Author J. Mark Elwood, Professor, Department of Preventive and Social Medicine, University of Otago, Dunedin.